SRC/ezxml.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include "ezxml.h"
#include "util.h"

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Data Structures
struct	ezxml_root
Defines
#define	EZXML_WS   "\t\r\n "
#define	EZXML_ERRL   128
Typedefs
typedef struct ezxml_root *	ezxml_root_t
Functions
ezxml_t	ezxml_child (ezxml_t xml, const char *name)
ezxml_t	ezxml_idx (ezxml_t xml, int idx)
const char *	ezxml_attr (ezxml_t xml, const char *attr)
ezxml_t	ezxml_vget (ezxml_t xml, va_list ap)
ezxml_t	ezxml_get (ezxml_t xml,...)
const char **	ezxml_pi (ezxml_t xml, const char *target)
ezxml_t	ezxml_err (ezxml_root_t root, char *s, const char *err,...)
char *	ezxml_decode (char *s, char **ent, char t)
void	ezxml_open_tag (ezxml_root_t root, char *name, char **attr)
void	ezxml_char_content (ezxml_root_t root, char *s, size_t len, char t)
ezxml_t	ezxml_close_tag (ezxml_root_t root, char *name, char *s)
int	ezxml_ent_ok (char *name, char *s, char **ent)
void	ezxml_proc_inst (ezxml_root_t root, char *s, size_t len)
short	ezxml_internal_dtd (ezxml_root_t root, char *s, size_t len)
char *	ezxml_str2utf8 (char **s, size_t *len)
void	ezxml_free_attr (char **attr)
ezxml_t	ezxml_parse_str (char *s, size_t len)
ezxml_t	ezxml_parse_fp (FILE *fp)
ezxml_t	ezxml_parse_fd (int fd)
ezxml_t	ezxml_parse_file (const char *file)
char *	ezxml_ampencode (const char *s, size_t len, char **dst, size_t *dlen, size_t *max, short a)
char *	ezxml_toxml_r (ezxml_t xml, char **s, size_t *len, size_t *max, size_t start, char ***attr)
char *	ezxml_toxml (ezxml_t xml)
void	ezxml_free (ezxml_t xml)
const char *	ezxml_error (ezxml_t xml)
ezxml_t	ezxml_new (const char *name)
ezxml_t	ezxml_insert (ezxml_t xml, ezxml_t dest, size_t off)
ezxml_t	ezxml_add_child (ezxml_t xml, const char *name, size_t off)
ezxml_t	ezxml_set_txt (ezxml_t xml, const char *txt)
ezxml_t	ezxml_set_attr (ezxml_t xml, const char *name, const char *value)
ezxml_t	ezxml_set_flag (ezxml_t xml, short flag)
ezxml_t	ezxml_cut (ezxml_t xml)
Variables
char *	EZXML_NIL [] = { NULL }

---

Define Documentation

#define EZXML_ERRL   128

Definition at line 65 of file ezxml.c.

#define EZXML_WS   "\t\r\n "

Definition at line 64 of file ezxml.c.

---

Typedef Documentation

typedef struct ezxml_root* ezxml_root_t

Definition at line 67 of file ezxml.c.

---

Function Documentation

ezxml_t ezxml_add_child	(	ezxml_t	xml,
		const char *	name,
		size_t	off
	)

Definition at line 1293 of file ezxml.c.

{
    ezxml_t child;

    if(!xml)
        return NULL;
    child = (ezxml_t) memset(malloc(sizeof(struct ezxml)), '\0',
                             sizeof(struct ezxml));
    child->name = (char *)name;
    child->attr = EZXML_NIL;
    child->txt = "";

    return ezxml_insert(child, xml, off);
}

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char* ezxml_ampencode	(	const char *	s,
		size_t	len,
		char **	dst,
		size_t *	dlen,
		size_t *	max,
		short	a
	)

Definition at line 971 of file ezxml.c.

{
    const char *e;

    for(e = s + len; s != e; s++)
        {
            while(*dlen + 10 > *max)
                *dst = realloc(*dst, *max += EZXML_BUFSIZE);

            switch (*s)
                {
                case '\0':
                    return *dst;
                case '&':
                    *dlen += sprintf(*dst + *dlen, "&");
                    break;
                case '<':
                    *dlen += sprintf(*dst + *dlen, "&lt;");
                    break;
                case '>':
                    *dlen += sprintf(*dst + *dlen, "&gt;");
                    break;
                case '"':
                    *dlen += sprintf(*dst + *dlen, (a) ? "&quot;" : "\"");
                    break;
                case '\n':
                    *dlen += sprintf(*dst + *dlen, (a) ? "&#xA;" : "\n");
                    break;
                case '\t':
                    *dlen += sprintf(*dst + *dlen, (a) ? "&#x9;" : "\t");
                    break;
                case '\r':
                    *dlen += sprintf(*dst + *dlen, "&#xD;");
                    break;
                default:
                    (*dst)[(*dlen)++] = *s;
                }
        }
    return *dst;
}

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const char* ezxml_attr	(	ezxml_t	xml,
		const char *	attr
	)

Definition at line 110 of file ezxml.c.

{
    int i = 0, j = 1;
    ezxml_root_t root = (ezxml_root_t) xml;

    if(!xml || !xml->attr)
        return NULL;
    while(xml->attr[i] && strcmp(attr, xml->attr[i]))
        i += 2;
    if(xml->attr[i])
        return xml->attr[i + 1];        /* found attribute */

    while(root->xml.parent)
        root = (ezxml_root_t) root->xml.parent; /* root tag */
    for(i = 0; root->attr[i] && strcmp(xml->name, root->attr[i][0]); i++);
    if(!root->attr[i])
        return NULL;            /* no matching default attributes */
    while(root->attr[i][j] && strcmp(attr, root->attr[i][j]))
        j += 3;
    return (root->attr[i][j]) ? root->attr[i][j + 1] : NULL;    /* found default */
}

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void ezxml_char_content	(	ezxml_root_t	root,
		char *	s,
		size_t	len,
		char	t
	)

Definition at line 332 of file ezxml.c.

{
    ezxml_t xml = root->cur;
    char *m = s;
    size_t l;

    if(!xml || !xml->name || !len)
        return;                 /* sanity check */

    s[len] = '\0';              /* null terminate text (calling functions anticipate this) */
    len = strlen(s = ezxml_decode(s, root->ent, t)) + 1;

    if(!*(xml->txt))
        xml->txt = s;           /* initial character content */
    else
        {                       /* allocate our own memory and make a copy */
            xml->txt = (xml->flags & EZXML_TXTM)        /* allocate some space */
                ? realloc(xml->txt, (l = strlen(xml->txt)) + len)
                : strcpy(malloc((l = strlen(xml->txt)) + len), xml->txt);
            strcpy(xml->txt + l, s);    /* add new char content */
            if(s != m)
                free(s);        /* free s if it was malloced by ezxml_decode() */
        }

    if(xml->txt != m)
        ezxml_set_flag(xml, EZXML_TXTM);
}

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ezxml_t ezxml_child	(	ezxml_t	xml,
		const char *	name
	)

Definition at line 88 of file ezxml.c.

{
    xml = (xml) ? xml->child : NULL;
    while(xml && strcmp(name, xml->name))
        xml = xml->sibling;
    return xml;
}

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ezxml_t ezxml_close_tag	(	ezxml_root_t	root,
		char *	name,
		char *	s
	)

Definition at line 365 of file ezxml.c.

{
    if(!root->cur || !root->cur->name || strcmp(name, root->cur->name))
        return ezxml_err(root, s, "unexpected closing tag </%s>", name);

    root->cur = root->cur->parent;
    return NULL;
}

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ezxml_t ezxml_cut

(

ezxml_t

xml

)

Definition at line 1401 of file ezxml.c.

{
    ezxml_t cur;

    if(!xml)
        return NULL;            /* nothing to do */
    if(xml->next)
        xml->next->sibling = xml->sibling;      /* patch sibling list */

    if(xml->parent)
        {                       /* not root tag */
            cur = xml->parent->child;   /* find head of subtag list */
            if(cur == xml)
                xml->parent->child = xml->ordered;      /* first subtag */
            else
                {               /* not first subtag */
                    while(cur->ordered != xml)
                        cur = cur->ordered;
                    cur->ordered = cur->ordered->ordered;       /* patch ordered list */

                    cur = xml->parent->child;   /* go back to head of subtag list */
                    if(strcmp(cur->name, xml->name))
                        {       /* not in first sibling list */
                            while(strcmp(cur->sibling->name, xml->name))
                                cur = cur->sibling;
                            if(cur->sibling == xml)
                                {       /* first of a sibling list */
                                    cur->sibling = (xml->next) ? xml->next
                                        : cur->sibling->sibling;
                                }
                            else
                                cur = cur->sibling;     /* not first of a sibling list */
                        }

                    while(cur->next && cur->next != xml)
                        cur = cur->next;
                    if(cur->next)
                        cur->next = cur->next->next;    /* patch next list */
                }
        }
    xml->ordered = xml->sibling = xml->next = NULL;
    return xml;
}

char* ezxml_decode	(	char *	s,
		char **	ent,
		char	t
	)

Definition at line 217 of file ezxml.c.

{
    char *e, *r = s, *m = s;
    long b, c, d, l;

    for(; *s; s++)
        {                       /* normalize line endings */
            while(*s == '\r')
                {
                    *(s++) = '\n';
                    if(*s == '\n')
                        memmove(s, (s + 1), strlen(s));
                }
        }

    for(s = r;;)
        {
            while(*s && *s != '&' && (*s != '%' || t != '%') && !isspace(*s))
                s++;

            if(!*s)
                break;
            else if(t != 'c' && !strncmp(s, "&#", 2))
                {               /* character reference */
                    if(s[2] == 'x')
                        c = strtol(s + 3, &e, 16);      /* base 16 */
                    else
                        c = strtol(s + 2, &e, 10);      /* base 10 */
                    if(!c || *e != ';')
                        {
                            s++;
                            continue;
                        }
                    /* not a character ref */
                    if(c < 0x80)
                        *(s++) = c;     /* US-ASCII subset */
                    else
                        {       /* multi-byte UTF-8 sequence */
                            for(b = 0, d = c; d; d /= 2)
                                b++;    /* number of bits in c */
                            b = (b - 2) / 5;    /* number of bytes in payload */
                            *(s++) = (0xFF << (7 - b)) | (c >> (6 * b));        /* head */
                            while(b)
                                *(s++) = 0x80 | ((c >> (6 * --b)) & 0x3F);      /* payload */
                        }

                    memmove(s, strchr(s, ';') + 1, strlen(strchr(s, ';')));
                }
            else if((*s == '&' && (t == '&' || t == ' ' || t == '*'))
                    || (*s == '%' && t == '%'))
                {               /* entity reference */
                    for(b = 0; ent[b] && strncmp(s + 1, ent[b], strlen(ent[b])); b += 2);       /* find entity in entity list */

                    if(ent[b++])
                        {       /* found a match */
                            if((c = strlen(ent[b])) - 1 > (e =
                                                           strchr(s,
                                                                  ';')) - s)
                                {
                                    l = (d = (s - r)) + c + strlen(e);  /* new length */
                                    r = (r == m) ? strcpy(malloc(l),
                                                          r) : realloc(r, l);
                                    e = strchr((s = r + d), ';');       /* fix up pointers */
                                }

                            memmove(s + c, e + 1, strlen(e));   /* shift rest of string */
                            strncpy(s, ent[b], c);      /* copy in replacement text */
                        }
                    else
                        s++;    /* not a known entity */
                }
            else if((t == ' ' || t == '*') && isspace(*s))
                *(s++) = ' ';
            else
                s++;            /* no decoding needed */
        }

    if(t == '*')
        {                       /* normalize spaces for non-cdata attributes */
            for(s = r; *s; s++)
                {
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    l = strspn(s, " ");
                    if(l)
                        memmove(s, s + l, strlen(s + l) + 1);
                    while(*s && *s != ' ')
                        s++;
                }
            if(--s >= r && *s == ' ')
                *s = '\0';      /* trim any trailing space */
        }
    return r;
}

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int ezxml_ent_ok	(	char *	name,
		char *	s,
		char **	ent
	)

Definition at line 379 of file ezxml.c.

{
    int i;

    for(;; s++)
        {
            while(*s && *s != '&')
                s++;            /* find next entity reference */
            if(!*s)
                return 1;
            if(!strncmp(s + 1, name, strlen(name)))
                return 0;       /* circular ref. */
            for(i = 0; ent[i] && strncmp(ent[i], s + 1, strlen(ent[i]));
                i += 2);
            if(ent[i] && !ezxml_ent_ok(name, ent[i + 1], ent))
                return 0;
        }
}

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ezxml_t ezxml_err	(	ezxml_root_t	root,
		char *	s,
		const char *	err,
			...
	)

Definition at line 189 of file ezxml.c.

{
    va_list ap;
    int line = 1;
    char *t, fmt[EZXML_ERRL];

    for(t = root->s; t < s; t++)
        if(*t == '\n')
            line++;
    snprintf(fmt, EZXML_ERRL, "[error near line %d]: %s", line, err);

    va_start(ap, err);
    vsnprintf(root->err, EZXML_ERRL, fmt, ap);
    va_end(ap);

    return &root->xml;
}

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const char* ezxml_error

(

ezxml_t

xml

)

Definition at line 1210 of file ezxml.c.

{
    while(xml && xml->parent)
        xml = xml->parent;      /* find root tag */
    return (xml) ? ((ezxml_root_t) xml)->err : "";
}

void ezxml_free

(

ezxml_t

xml

)

Definition at line 1151 of file ezxml.c.

{
    ezxml_root_t root = (ezxml_root_t) xml;
    int i, j;
    char **a, *s;

    if(!xml)
        return;
    ezxml_free(xml->child);
    ezxml_free(xml->ordered);

    if(!xml->parent)
        {                       /* free root tag allocations */
            for(i = 10; root->ent[i]; i += 2)   /* 0 - 9 are default entites (<>&"') */
                if((s = root->ent[i + 1]) < root->s || s > root->e)
                    free(s);
            free(root->ent);    /* free list of general entities */

            for(i = 0; root->attr[i]; i++)
                {
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    a = root->attr[i];
                    for(j = 1; a[j++]; j += 2)  /* free malloced attribute values */
                        if(a[j] && (a[j] < root->s || a[j] > root->e))
                            free(a[j]);
                    free(a);
                }
            if(root->attr[0])
                free(root->attr);       /* free default attribute list */

            for(i = 0; root->pi[i]; i++)
                {
                    for(j = 1; root->pi[i][j]; j++);
                    free(root->pi[i][j + 1]);
                    free(root->pi[i]);
                }
            if(root->pi[0])
                free(root->pi); /* free processing instructions */

            if(root->len == -1)
                free(root->m);  /* malloced xml data */
#ifndef EZXML_NOMMAP
            else if(root->len)
                munmap(root->m, root->len);     /* mem mapped xml data */
#endif /* EZXML_NOMMAP */
            if(root->u)
                free(root->u);  /* utf8 conversion */
        }

    ezxml_free_attr(xml->attr); /* tag attributes */
    if((xml->flags & EZXML_TXTM))
        free(xml->txt);         /* character content */
    if((xml->flags & EZXML_NAMEM))
        free(xml->name);        /* tag name */
    free(xml);
}

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void ezxml_free_attr

(

char **

attr

)

Definition at line 659 of file ezxml.c.

{
    int i = 0;
    char *m;

    if(!attr || attr == EZXML_NIL)
        return;                 /* nothing to free */
    while(attr[i])
        i += 2;                 /* find end of attribute list */
    m = attr[i + 1];            /* list of which names and values are malloced */
    for(i = 0; m[i]; i++)
        {
            if(m[i] & EZXML_NAMEM)
                free(attr[i * 2]);
            if(m[i] & EZXML_TXTM)
                free(attr[(i * 2) + 1]);
        }
    free(m);
    free(attr);
}

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ezxml_t ezxml_get	(	ezxml_t	xml,
			...
	)

Definition at line 157 of file ezxml.c.

{
    va_list ap;
    ezxml_t r;

    va_start(ap, xml);
    r = ezxml_vget(xml, ap);
    va_end(ap);
    return r;
}

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ezxml_t ezxml_idx	(	ezxml_t	xml,
		int	idx
	)

Definition at line 100 of file ezxml.c.

{
    for(; xml && idx; idx--)
        xml = xml->next;
    return xml;
}

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ezxml_t ezxml_insert	(	ezxml_t	xml,
		ezxml_t	dest,
		size_t	off
	)

Definition at line 1238 of file ezxml.c.

{
    ezxml_t cur, prev, head;

    xml->next = xml->sibling = xml->ordered = NULL;
    xml->off = off;
    xml->parent = dest;

    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
    head = dest->child;
    if(head)
        {                       /* already have sub tags */
            if(head->off <= off)
                {               /* not first subtag */
                    for(cur = head; cur->ordered && cur->ordered->off <= off;
                        cur = cur->ordered);
                    xml->ordered = cur->ordered;
                    cur->ordered = xml;
                }
            else
                {               /* first subtag */
                    xml->ordered = head;
                    dest->child = xml;
                }

            for(cur = head, prev = NULL; cur && strcmp(cur->name, xml->name); prev = cur, cur = cur->sibling);  /* find tag type */
            if(cur && cur->off <= off)
                {               /* not first of type */
                    while(cur->next && cur->next->off <= off)
                        cur = cur->next;
                    xml->next = cur->next;
                    cur->next = xml;
                }
            else
                {               /* first tag of this type */
                    if(prev && cur)
                        prev->sibling = cur->sibling;   /* remove old first */
                    xml->next = cur;    /* old first tag is now next */
                    for(cur = head, prev = NULL; cur && cur->off <= off; prev = cur, cur = cur->sibling);       /* new sibling insert point */
                    xml->sibling = cur;
                    if(prev)
                        prev->sibling = xml;
                }
        }
    else
        dest->child = xml;      /* only sub tag */

    return xml;
}

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short ezxml_internal_dtd	(	ezxml_root_t	root,
		char *	s,
		size_t	len
	)

Definition at line 452 of file ezxml.c.

{
    char q, *c, *t, *n = NULL, *v, **ent, **pe;
    int i, j;

    pe = memcpy(malloc(sizeof(EZXML_NIL)), EZXML_NIL, sizeof(EZXML_NIL));

    for(s[len] = '\0'; s;)
        {
            while(*s && *s != '<' && *s != '%')
                s++;            /* find next declaration */

            if(!*s)
                break;
            else if(!strncmp(s, "<!ENTITY", 8))
                {               /* parse entity definitions */
                    c = s += strspn(s + 8, EZXML_WS) + 8;       /* skip white space separator */
                    n = s + strspn(s, EZXML_WS "%");    /* find name */
                    *(s = n + strcspn(n, EZXML_WS)) = ';';      /* append ; to name */

                    v = s + strspn(s + 1, EZXML_WS) + 1;        /* find value */
                    if((q = *(v++)) != '"' && q != '\'')
                        {       /* skip externals */
                            s = strchr(s, '>');
                            continue;
                        }

                    for(i = 0, ent = (*c == '%') ? pe : root->ent; ent[i];
                        i++);
                    ent = realloc(ent, (i + 3) * sizeof(char *));       /* space for next ent */
                    if(*c == '%')
                        pe = ent;
                    else
                        root->ent = ent;

                    *(++s) = '\0';      /* null terminate name */
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    s = strchr(v, q);
                    if(s)
                        *(s++) = '\0';  /* null terminate value */
                    ent[i + 1] = ezxml_decode(v, pe, '%');      /* set value */
                    ent[i + 2] = NULL;  /* null terminate entity list */
                    if(!ezxml_ent_ok(n, ent[i + 1], ent))
                        {       /* circular reference */
                            if(ent[i + 1] != v)
                                free(ent[i + 1]);
                            ezxml_err(root, v,
                                      "circular entity declaration &%s", n);
                            break;
                        }
                    else
                        ent[i] = n;     /* set entity name */
                }
            else if(!strncmp(s, "<!ATTLIST", 9))
                {               /* parse default attributes */
                    t = s + strspn(s + 9, EZXML_WS) + 9;        /* skip whitespace separator */
                    if(!*t)
                        {
                            ezxml_err(root, t, "unclosed <!ATTLIST");
                            break;
                        }
                    if(*(s = t + strcspn(t, EZXML_WS ">")) == '>')
                        continue;
                    else
                        *s = '\0';      /* null terminate tag name */
                    for(i = 0; root->attr[i] && strcmp(n, root->attr[i][0]);
                        i++);

                    while(*(n = ++s + strspn(s, EZXML_WS)) && *n != '>')
                        {
                            if(*(s = n + strcspn(n, EZXML_WS)))
                                *s = '\0';      /* attr name */
                            else
                                {
                                    ezxml_err(root, t, "malformed <!ATTLIST");
                                    break;
                                }

                            s += strspn(s + 1, EZXML_WS) + 1;   /* find next token */
                            c = (strncmp(s, "CDATA", 5)) ? "*" : " ";   /* is it cdata? */
                            if(!strncmp(s, "NOTATION", 8))
                                s += strspn(s + 8, EZXML_WS) + 8;
                            s = (*s == '(') ? strchr(s, ')') : s + strcspn(s,
                                                                           EZXML_WS);
                            if(!s)
                                {
                                    ezxml_err(root, t, "malformed <!ATTLIST");
                                    break;
                                }

                            s += strspn(s, EZXML_WS ")");       /* skip white space separator */
                            if(!strncmp(s, "#FIXED", 6))
                                s += strspn(s + 6, EZXML_WS) + 6;
                            if(*s == '#')
                                {       /* no default value */
                                    s += strcspn(s, EZXML_WS ">") - 1;
                                    if(*c == ' ')
                                        continue;       /* cdata is default, nothing to do */
                                    v = NULL;
                                }
                            else
                                {
                                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                                    s = strchr(v = s + 1, *s);
                                    if((*s == '"' || *s == '\'') &&     /* default value */
                                       s)
                                        *s = '\0';
                                    else
                                        {
                                            ezxml_err(root, t,
                                                      "malformed <!ATTLIST");
                                            break;
                                        }
                                }

                            if(!root->attr[i])
                                {       /* new tag name */
                                    root->attr =
                                        (!i) ? malloc(2 *
                                                      sizeof(char **)) :
                                        realloc(root->attr,
                                                (i + 2) * sizeof(char **));
                                    root->attr[i] =
                                        malloc(2 * sizeof(char *));
                                    root->attr[i][0] = t;       /* set tag name */
                                    root->attr[i][1] =
                                        (char *)(root->attr[i + 1] = NULL);
                                }

                            for(j = 1; root->attr[i][j]; j += 3);       /* find end of list */
                            root->attr[i] = realloc(root->attr[i],
                                                    (j + 4) * sizeof(char *));

                            root->attr[i][j + 3] = NULL;        /* null terminate list */
                            root->attr[i][j + 2] = c;   /* is it cdata? */
                            root->attr[i][j + 1] =
                                (v) ? ezxml_decode(v, root->ent, *c) : NULL;
                            root->attr[i][j] = n;       /* attribute name  */
                        }
                }
            else if(!strncmp(s, "<!--", 4))
                s = strstr(s + 4, "-->");       /* comments */
            else if(!strncmp(s, "<?", 2))
                {               /* processing instructions */
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    s = strstr(c = s + 2, "?>");
                    if(s)
                        ezxml_proc_inst(root, c, s++ - c);
                }
            else if(*s == '<')
                s = strchr(s, '>');     /* skip other declarations */
            else if(*(s++) == '%' && !root->standalone)
                break;
        }

    free(pe);
    return !*root->err;
}

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ezxml_t ezxml_new

(

const char *

name

)

Definition at line 1219 of file ezxml.c.

{
    static char *ent[] = { "lt;", "<", "gt;", ">", "quot;", """,
        "apos;", "'", "amp;", "&", NULL
    };
    ezxml_root_t root =
        (ezxml_root_t) memset(malloc(sizeof(struct ezxml_root)),
                              '\0', sizeof(struct ezxml_root));

    root->xml.name = (char *)name;
    root->cur = &root->xml;
    strcpy(root->err, root->xml.txt = "");
    root->ent = memcpy(malloc(sizeof(ent)), ent, sizeof(ent));
    root->attr = root->pi = (char ***)(root->xml.attr = EZXML_NIL);
    return &root->xml;
}

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void ezxml_open_tag	(	ezxml_root_t	root,
		char *	name,
		char **	attr
	)

Definition at line 315 of file ezxml.c.

{
    ezxml_t xml = root->cur;

    if(xml->name)
        xml = ezxml_add_child(xml, name, strlen(xml->txt));
    else
        xml->name = name;       /* first open tag */

    xml->attr = attr;
    root->cur = xml;            /* update tag insertion point */
}

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ezxml_t ezxml_parse_fd

(

int

fd

)

Definition at line 921 of file ezxml.c.

{
    ezxml_root_t root;
    struct stat st;
    size_t l;
    void *m;

    if(fd < 0)
        return NULL;
    fstat(fd, &st);

#ifndef EZXML_NOMMAP
    l = (st.st_size + sysconf(_SC_PAGESIZE) -
         1) & ~(sysconf(_SC_PAGESIZE) - 1);
    if((m =
        mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd,
             0)) != MAP_FAILED)
        {
            madvise(m, l, MADV_SEQUENTIAL);     /* optimize for sequential access */
            root = (ezxml_root_t) ezxml_parse_str(m, st.st_size);
            madvise(m, root->len = l, MADV_NORMAL);     /* put it back to normal */
        }
    else
        {                       /* mmap failed, read file into memory */
#endif /* EZXML_NOMMAP */
            l = read(fd, m = malloc(st.st_size), st.st_size);
            root = (ezxml_root_t) ezxml_parse_str(m, l);
            /* Ted Campbell, Aug 14, 2007. Added explicit cast. */
            root->len = (size_t) (-1);  /* so we know to free s in ezxml_free() */
#ifndef EZXML_NOMMAP
        }
#endif /* EZXML_NOMMAP */
    return &root->xml;
}

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ezxml_t ezxml_parse_file

(

const char *

file

)

Definition at line 958 of file ezxml.c.

{
    int fd = open(file, O_RDONLY, 0);
    ezxml_t xml = ezxml_parse_fd(fd);

    if(fd >= 0)
        close(fd);
    return xml;
}

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ezxml_t ezxml_parse_fp

(

FILE *

fp

)

Definition at line 891 of file ezxml.c.

{
    ezxml_root_t root;
    size_t l, len = 0;
    char *s;

    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
    s = malloc(EZXML_BUFSIZE);
    if(!s)
        return NULL;
    do
        {
            len += (l = fread((s + len), 1, EZXML_BUFSIZE, fp));
            if(l == EZXML_BUFSIZE)
                s = realloc(s, len + EZXML_BUFSIZE);
        }
    while(s && l == EZXML_BUFSIZE);

    if(!s)
        return NULL;
    root = (ezxml_root_t) ezxml_parse_str(s, len);
    /* Ted Campbell, Aug 14, 2007. Added explicit cast. */
    root->len = (size_t) (-1);  /* so we know to free s in ezxml_free() */
    return &root->xml;
}

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ezxml_t ezxml_parse_str	(	char *	s,
		size_t	len
	)

Definition at line 682 of file ezxml.c.

{
    ezxml_root_t root = (ezxml_root_t) ezxml_new(NULL);
    char q, e, *d, **attr, **a = NULL;  /* initialize a to avoid compile warning */
    int l, i, j;

    root->m = s;
    if(!len)
        return ezxml_err(root, NULL, "root tag missing");
    root->u = ezxml_str2utf8(&s, &len); /* convert utf-16 to utf-8 */
    root->e = (root->s = s) + len;      /* record start and end of work area */

    e = s[len - 1];             /* save end char */
    s[len - 1] = '\0';          /* turn end char into null terminator */

    while(*s && *s != '<')
        s++;                    /* find first tag */
    if(!*s)
        return ezxml_err(root, s, "root tag missing");

    for(;;)
        {
            attr = (char **)EZXML_NIL;
            d = ++s;

            if(isalpha(*s) || *s == '_' || *s == ':' || *s < '\0')
                {               /* new tag */
                    if(!root->cur)
                        return ezxml_err(root, d,
                                         "markup outside of root element");

                    s += strcspn(s, EZXML_WS "/>");
                    while(isspace(*s))
                        *(s++) = '\0';  /* null terminate tag name */

                    if(*s && *s != '/' && *s != '>')
                        {       /* find tag in default attr list */
                            /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                            a = root->attr[0];
                            for(i = 0; a && strcmp(a[0], d); i++)
                                {
                                    a = root->attr[i];
                                }
                        }

                    for(l = 0; *s && *s != '/' && *s != '>'; l += 2)
                        {       /* new attrib */
                            attr = (l) ? realloc(attr, (l + 4) * sizeof(char *)) : malloc(4 * sizeof(char *));  /* allocate space */
                            attr[l + 3] = (l) ? realloc(attr[l + 1], (l / 2) + 2) : malloc(2);  /* mem for list of maloced vals */
                            strcpy(attr[l + 3] + (l / 2), " "); /* value is not malloced */
                            attr[l + 2] = NULL; /* null terminate list */
                            attr[l + 1] = "";   /* temporary attribute value */
                            attr[l] = s;        /* set attribute name */

                            s += strcspn(s, EZXML_WS "=/>");
                            if(*s == '=' || isspace(*s))
                                {
                                    *(s++) = '\0';      /* null terminate tag attribute name */
                                    q = *(s += strspn(s, EZXML_WS "="));
                                    if(q == '"' || q == '\'')
                                        {       /* attribute value */
                                            attr[l + 1] = ++s;
                                            while(*s && *s != q)
                                                s++;
                                            if(*s)
                                                *(s++) = '\0';  /* null terminate attribute val */
                                            else
                                                {
                                                    ezxml_free_attr(attr);
                                                    return ezxml_err(root, d,
                                                                     "missing %c",
                                                                     q);
                                                }

                                            for(j = 1; a && a[j]
                                                && strcmp(a[j], attr[l]);
                                                j += 3);
                                            attr[l + 1] =
                                                ezxml_decode(attr[l + 1],
                                                             root->ent, (a
                                                                         &&
                                                                         a[j])
                                                             ? *a[j +
                                                                  2] : ' ');
                                            if(attr[l + 1] < d
                                               || attr[l + 1] > s)
                                                attr[l + 3][l / 2] = EZXML_TXTM;        /* value malloced */
                                        }
                                }
                            while(isspace(*s))
                                s++;
                        }

                    if(*s == '/')
                        {       /* self closing tag */
                            *(s++) = '\0';
                            if((*s && *s != '>') || (!*s && e != '>'))
                                {
                                    if(l)
                                        ezxml_free_attr(attr);
                                    return ezxml_err(root, d, "missing >");
                                }
                            ezxml_open_tag(root, d, attr);
                            ezxml_close_tag(root, d, s);
                        }
                    else if((q = *s) == '>' || (!*s && e == '>'))
                        {       /* open tag */
                            *s = '\0';  /* temporarily null terminate tag name */
                            ezxml_open_tag(root, d, attr);
                            *s = q;
                        }
                    else
                        {
                            if(l)
                                ezxml_free_attr(attr);
                            return ezxml_err(root, d, "missing >");
                        }
                }
            else if(*s == '/')
                {               /* close tag */
                    s += strcspn(d = s + 1, EZXML_WS ">") + 1;
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    q = *s;
                    if(!q && e != '>')
                        return ezxml_err(root, d, "missing >");
                    *s = '\0';  /* temporarily null terminate tag name */
                    if(ezxml_close_tag(root, d, s))
                        return &root->xml;
                    if(isspace(*s = q))
                        s += strspn(s, EZXML_WS);
                }
            else if(!strncmp(s, "!--", 3))
                {               /* xml comment */
                    s = strstr(s + 3, "--");
                    if(!s || (*(s += 2) != '>' && *s) || (!*s && e != '>'))
                        return ezxml_err(root, d, "unclosed <!--");
                }
            else if(!strncmp(s, "![CDATA[", 8))
                {               /* cdata */
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    s = strstr(s, "]]>");
                    if(s)
                        ezxml_char_content(root, d + 8, (s += 2) - d - 10,
                                           'c');
                    else
                        return ezxml_err(root, d, "unclosed <![CDATA[");
                }
            else if(!strncmp(s, "!DOCTYPE", 8))
                {               /* dtd */
                    for(l = 0; *s && ((!l && *s != '>') || (l && (*s != ']' ||
                                                                  *(s +
                                                                    strspn(s +
                                                                           1,
                                                                           EZXML_WS)
                                                                    + 1) !=
                                                                  '>')));
                        l = (*s == '[') ? 1 : l)
                        s += strcspn(s + 1, "[]>") + 1;
                    if(!*s && e != '>')
                        return ezxml_err(root, d, "unclosed <!DOCTYPE");
                    d = (l) ? strchr(d, '[') + 1 : d;
                    if(l && !ezxml_internal_dtd(root, d, s++ - d))
                        return &root->xml;
                }
            else if(*s == '?')
                {               /* <?...?> processing instructions */
                    do
                        {
                            s = strchr(s, '?');
                        }
                    while(s && *(++s) && *s != '>');
                    if(!s || (!*s && e != '>'))
                        return ezxml_err(root, d, "unclosed <?");
                    else
                        ezxml_proc_inst(root, d + 1, s - d - 2);
                }
            else
                return ezxml_err(root, d, "unexpected <");

            if(!s || !*s)
                break;
            *s = '\0';
            d = ++s;
            if(*s && *s != '<')
                {               /* tag character content */
                    while(*s && *s != '<')
                        s++;
                    if(*s)
                        ezxml_char_content(root, d, s - d, '&');
                    else
                        break;
                }
            else if(!*s)
                break;
        }

    if(!root->cur)
        return &root->xml;
    else if(!root->cur->name)
        return ezxml_err(root, d, "root tag missing");
    else
        return ezxml_err(root, d, "unclosed tag <%s>", root->cur->name);
}

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const char** ezxml_pi	(	ezxml_t	xml,
		const char *	target
	)

Definition at line 172 of file ezxml.c.

{
    ezxml_root_t root = (ezxml_root_t) xml;
    int i = 0;

    if(!root)
        return (const char **)EZXML_NIL;
    while(root->xml.parent)
        root = (ezxml_root_t) root->xml.parent; /* root tag */
    while(root->pi[i] && strcmp(target, root->pi[i][0]))
        i++;                    /* find target */
    return (const char **)((root->pi[i]) ? root->pi[i] + 1 : EZXML_NIL);
}

void ezxml_proc_inst	(	ezxml_root_t	root,
		char *	s,
		size_t	len
	)

Definition at line 402 of file ezxml.c.

{
    int i = 0, j = 1;
    char *target = s;

    s[len] = '\0';              /* null terminate instruction */
    if(*(s += strcspn(s, EZXML_WS)))
        {
            *s = '\0';          /* null terminate target */
            s += strspn(s + 1, EZXML_WS) + 1;   /* skip whitespace after target */
        }

    if(!strcmp(target, "xml"))
        {                       /* <?xml ... ?> */
            /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
            s = strstr(s, "standalone");
            if(s && !strncmp(s + strspn(s + 10,
                                        EZXML_WS "='\"") + 10, "yes", 3))
                root->standalone = 1;
            return;
        }

    if(!root->pi[0])
        *(root->pi = malloc(sizeof(char **))) = NULL;   /*first pi */

    while(root->pi[i] && strcmp(target, root->pi[i][0]))
        i++;                    /* find target */
    if(!root->pi[i])
        {                       /* new target */
            root->pi = realloc(root->pi, sizeof(char **) * (i + 2));
            root->pi[i] = malloc(sizeof(char *) * 3);
            root->pi[i][0] = target;
            root->pi[i][1] = (char *)(root->pi[i + 1] = NULL);  /* terminate pi list */
            /* Ted Campbell, Aug 14, 2007. Changed to use 'my_strdup' */
            root->pi[i][2] = my_strdup("");     /* empty document position list */
        }

    while(root->pi[i][j])
        j++;                    /* find end of instruction list for this target */
    root->pi[i] = realloc(root->pi[i], sizeof(char *) * (j + 3));
    root->pi[i][j + 2] = realloc(root->pi[i][j + 1], j + 1);
    strcpy(root->pi[i][j + 2] + j - 1, (root->xml.name) ? ">" : "<");
    root->pi[i][j + 1] = NULL;  /* null terminate pi list for this target */
    root->pi[i][j] = s;         /* set instruction */
}

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ezxml_t ezxml_set_attr	(	ezxml_t	xml,
		const char *	name,
		const char *	value
	)

Definition at line 1327 of file ezxml.c.

{
    int l = 0, c;

    if(!xml)
        return NULL;
    while(xml->attr[l] && strcmp(xml->attr[l], name))
        l += 2;
    if(!xml->attr[l])
        {                       /* not found, add as new attribute */
            if(!value)
                return xml;     /* nothing to do */
            if(xml->attr == EZXML_NIL)
                {               /* first attribute */
                    xml->attr = malloc(4 * sizeof(char *));
                    /* Ted Campbell, Aug 14, 2007. Changed to use 'my_strdup' */
                    xml->attr[1] = my_strdup("");       /* empty list of malloced names/vals */
                }
            else
                xml->attr = realloc(xml->attr, (l + 4) * sizeof(char *));

            xml->attr[l] = (char *)name;        /* set attribute name */
            xml->attr[l + 2] = NULL;    /* null terminate attribute list */
            xml->attr[l + 3] = realloc(xml->attr[l + 1],
                                       (c = strlen(xml->attr[l + 1])) + 2);
            strcpy(xml->attr[l + 3] + c, " ");  /* set name/value as not malloced */
            if(xml->flags & EZXML_DUP)
                xml->attr[l + 3][c] = (char)(unsigned char)EZXML_NAMEM;
        }
    else if(xml->flags & EZXML_DUP)
        free((char *)name);     /* name was strduped */

    for(c = l; xml->attr[c]; c += 2);   /* find end of attribute list */
    if(xml->attr[c + 1][l / 2] & EZXML_TXTM)
        free(xml->attr[l + 1]); /*old val */
    if(xml->flags & EZXML_DUP)
        xml->attr[c + 1][l / 2] |= EZXML_TXTM;
    else
        xml->attr[c + 1][l / 2] &= ~EZXML_TXTM;

    if(value)
        xml->attr[l + 1] = (char *)value;       /* set attribute value */
    else
        {                       /* remove attribute */
            if(xml->attr[c + 1][l / 2] & EZXML_NAMEM)
                free(xml->attr[l]);
            /* Ted Campbell, Aug 14, 2007. It seems that the size should be 
             * (c + 2) - (l + 2) = (c - l) */
            memmove(xml->attr + l, xml->attr + l + 2,
                    (c - l) * sizeof(char *));
            /* Ted Campbell, Aug 14, 2007. We need to adjust c to point to new
             * location it was moved to since its old location is undefined */
            c -= 2;             /* We have one less elements */
            xml->attr = realloc(xml->attr, (c + 2) * sizeof(char *));
            memmove(xml->attr[c + 1] + (l / 2), xml->attr[c + 1] + (l / 2) + 1, (c / 2) - (l / 2));     /* fix list of which name/vals are malloced */
        }
    xml->flags &= ~EZXML_DUP;   /* clear strdup() flag */
    return xml;
}

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ezxml_t ezxml_set_flag	(	ezxml_t	xml,
		short	flag
	)

Definition at line 1391 of file ezxml.c.

{
    if(xml)
        xml->flags |= flag;
    return xml;
}

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ezxml_t ezxml_set_txt	(	ezxml_t	xml,
		const char *	txt
	)

Definition at line 1312 of file ezxml.c.

{
    if(!xml)
        return NULL;
    if(xml->flags & EZXML_TXTM)
        free(xml->txt);         /* existing txt was malloced */
    xml->flags &= ~EZXML_TXTM;
    xml->txt = (char *)txt;
    return xml;
}

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char* ezxml_str2utf8	(	char **	s,
		size_t *	len
	)

Definition at line 616 of file ezxml.c.

{
    char *u;
    size_t l = 0, sl, max = *len;
    long c, d;
    int b, be = (**s == '\xFE') ? 1 : (**s == '\xFF') ? 0 : -1;

    if(be == -1)
        return NULL;            /* not UTF-16 */

    u = malloc(max);
    for(sl = 2; sl < *len - 1; sl += 2)
        {
            c = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] & 0xFF) /*UTF-16BE */
                : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF);     /*UTF-16LE */
            if(c >= 0xD800 && c <= 0xDFFF && (sl += 2) < *len - 1)
                {               /* high-half */
                    d = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] &
                                                           0xFF)
                        : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF);
                    c = (((c & 0x3FF) << 10) | (d & 0x3FF)) + 0x10000;
                }

            while(l + 6 > max)
                u = realloc(u, max += EZXML_BUFSIZE);
            if(c < 0x80)
                u[l++] = c;     /* US-ASCII subset */
            else
                {               /* multi-byte UTF-8 sequence */
                    for(b = 0, d = c; d; d /= 2)
                        b++;    /* bits in c */
                    b = (b - 2) / 5;    /* bytes in payload */
                    u[l++] = (0xFF << (7 - b)) | (c >> (6 * b));        /* head */
                    while(b)
                        u[l++] = 0x80 | ((c >> (6 * --b)) & 0x3F);      /* payload */
                }
        }
    return *s = realloc(u, *len = l);
}

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char* ezxml_toxml

(

ezxml_t

xml

)

Definition at line 1092 of file ezxml.c.

{
    ezxml_t p = (xml) ? xml->parent : NULL,
      o = (xml) ? xml->ordered : NULL;
    ezxml_root_t root = (ezxml_root_t) xml;
    size_t len = 0, max = EZXML_BUFSIZE;
    char *s = strcpy(malloc(max), ""),
     *t,
     *n;
    int i, j, k;

    if(!xml || !xml->name)
        return realloc(s, len + 1);
    while(root->xml.parent)
        root = (ezxml_root_t) root->xml.parent; /* root tag */

    for(i = 0; !p && root->pi[i]; i++)
        {                       /* pre-root processing instructions */
            for(k = 2; root->pi[i][k - 1]; k++);
            for(j = 1; root->pi[i][j]; j++)
                {
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    n = root->pi[i][j];
                    if(root->pi[i][k][j - 1] == '>')
                        continue;       /* not pre-root */
                    while(len + strlen(t = root->pi[i][0]) + strlen(n) + 7 >
                          max)
                        s = realloc(s, max += EZXML_BUFSIZE);
                    len +=
                        sprintf(s + len, "<?%s%s%s?>\n", t, *n ? " " : "", n);
                }
        }

    xml->parent = xml->ordered = NULL;
    s = ezxml_toxml_r(xml, &s, &len, &max, 0, root->attr);
    xml->parent = p;
    xml->ordered = o;

    for(i = 0; !p && root->pi[i]; i++)
        {                       /* post-root processing instructions */
            for(k = 2; root->pi[i][k - 1]; k++);
            for(j = 1; root->pi[i][j]; j++)
                {
                    /* Jason Luu, Aug 29, 2007. Removed assignment in conditional statement */
                    n = root->pi[i][j];
                    if(root->pi[i][k][j - 1] == '<')
                        continue;       /* not post-root */
                    while(len + strlen(t = root->pi[i][0]) + strlen(n) + 7 >
                          max)
                        s = realloc(s, max += EZXML_BUFSIZE);
                    len +=
                        sprintf(s + len, "\n<?%s%s%s?>", t, *n ? " " : "", n);
                }
        }
    return realloc(s, len + 1);
}

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char* ezxml_toxml_r	(	ezxml_t	xml,
		char **	s,
		size_t *	len,
		size_t *	max,
		size_t	start,
		char ***	attr
	)

Definition at line 1021 of file ezxml.c.

{
    int i, j;
    char *txt = (xml->parent) ? xml->parent->txt : "";
    size_t off = 0;

    /* parent character content up to this tag */
    *s = ezxml_ampencode(txt + start, xml->off - start, s, len, max, 0);

    while(*len + strlen(xml->name) + 4 > *max)  /* reallocate s */
        *s = realloc(*s, *max += EZXML_BUFSIZE);

    *len += sprintf(*s + *len, "<%s", xml->name);       /* open tag */
    for(i = 0; xml->attr[i]; i += 2)
        {                       /* tag attributes */
            if(ezxml_attr(xml, xml->attr[i]) != xml->attr[i + 1])
                continue;
            while(*len + strlen(xml->attr[i]) + 7 > *max)       /* reallocate s */
                *s = realloc(*s, *max += EZXML_BUFSIZE);

            *len += sprintf(*s + *len, " %s=\"", xml->attr[i]);
            /* Ted Campbell, Aug 14, 2007. Added explicit cast to size_t. */
            ezxml_ampencode(xml->attr[i + 1], (size_t) (-1), s, len, max, 1);
            *len += sprintf(*s + *len, "\"");
        }

    for(i = 0; attr[i] && strcmp(attr[i][0], xml->name); i++);
    for(j = 1; attr[i] && attr[i][j]; j += 3)
        {                       /* default attributes */
            if(!attr[i][j + 1]
               || ezxml_attr(xml, attr[i][j]) != attr[i][j + 1])
                continue;       /* skip duplicates and non-values */
            while(*len + strlen(attr[i][j]) + 7 > *max) /* reallocate s */
                *s = realloc(*s, *max += EZXML_BUFSIZE);

            *len += sprintf(*s + *len, " %s=\"", attr[i][j]);
            /* Ted Campbell, Aug 14, 2007. Added explicit cast to size_t. */
            ezxml_ampencode(attr[i][j + 1], (size_t) (-1), s, len, max, 1);
            *len += sprintf(*s + *len, "\"");
        }
    *len += sprintf(*s + *len, ">");

    /* Ted Campbell, Aug 14, 2007. Added explicit cast to size_t. */
    *s = (xml->child) ? ezxml_toxml_r(xml->child, s, len, max, 0, attr) /*child */
        : ezxml_ampencode(xml->txt, (size_t) (-1), s, len, max, 0);     /*data */

    while(*len + strlen(xml->name) + 4 > *max)  /* reallocate s */
        *s = realloc(*s, *max += EZXML_BUFSIZE);

    *len += sprintf(*s + *len, "</%s>", xml->name);     /* close tag */

    while(txt[off] && off < xml->off)
        off++;                  /* make sure off is within bounds */
    /* Ted Campbell, Aug 14, 2007. Added explicit cast to size_t. */
    return (xml->ordered) ? ezxml_toxml_r(xml->ordered, s, len, max, off,
                                          attr) : ezxml_ampencode(txt +
                                                                  off,
                                                                  (size_t)
                                                                  (-1), s,
                                                                  len, max,
                                                                  0);
}

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ezxml_t ezxml_vget	(	ezxml_t	xml,
		va_list	ap
	)

Definition at line 135 of file ezxml.c.

{
    char *name = va_arg(ap, char *);
    int idx = -1;

    if(name && *name)
        {
            idx = va_arg(ap, int);

            xml = ezxml_child(xml, name);
        }
    return (idx < 0) ? xml : ezxml_vget(ezxml_idx(xml, idx), ap);
}

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---

Variable Documentation

char* EZXML_NIL[] = { NULL }

Definition at line 84 of file ezxml.c.