libvpr/read_xml_util.c File Reference
#include <assert.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include "util.h"#include "ezxml.h"#include "read_xml_util.h"
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Functions | |
| ezxml_t | FindElement (INP ezxml_t Parent, INP const char *Name, INP boolean Required) |
| ezxml_t | FindFirstElement (INP ezxml_t Parent, INP const char *Name, INP boolean Required) |
| void | CheckElement (INP ezxml_t Node, INP const char *Name) |
| void | FreeNode (INOUTP ezxml_t Node) |
| boolean | IsWhitespace (char c) |
| const char * | FindProperty (INP ezxml_t Parent, INP const char *Name, INP boolean Required) |
| void | CountTokensInString (INP const char *Str, OUTP int *Num, OUTP int *Len) |
| char ** | GetNodeTokens (INP ezxml_t Node) |
| char ** | LookaheadNodeTokens (INP ezxml_t Node) |
| int | GetIntProperty (INP ezxml_t Parent, INP const char *Name, INP boolean Required, INP int default_value) |
| float | GetFloatProperty (INP ezxml_t Parent, INP const char *Name, INP boolean Required, INP float default_value) |
| boolean | GetBooleanProperty (INP ezxml_t Parent, INP const char *Name, INP boolean Required, INP boolean default_value) |
| int | CountChildren (INP ezxml_t Node, INP const char *Name, INP int min_count) |
Function Documentation
| void CheckElement | ( | INP ezxml_t | Node, |
| INP const char * | Name | ||
| ) |
Checks the node is an element with name equal to one given
Definition at line 67 of file read_xml_util.c.
{
assert(Node != NULL && Name != NULL);
if(0 != strcmp(Node->name, Name))
{
printf(ERRTAG
"[LINE %d] Element '%s' within element '%s' does match expected "
"element type of '%s'\n", Node->line, Node->name, Node->parent->name,
Name);
exit(1);
}
}
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| int CountChildren | ( | INP ezxml_t | Node, |
| INP const char * | Name, | ||
| INP int | min_count | ||
| ) |
Counts number of child elements in a container element. Name is the name of the child element. Errors if no occurances found.
Definition at line 407 of file read_xml_util.c.
{
ezxml_t Cur, sibling;
int Count;
Count = 0;
Cur = Node->child;
sibling = NULL;
if(Cur)
{
sibling = Cur->sibling;
}
while(Cur)
{
if(strcmp(Cur->name, Name) == 0)
{
++Count;
}
Cur = Cur->next;
if(Cur == NULL)
{
Cur = sibling;
if(Cur != NULL)
{
sibling = Cur->sibling;
}
}
}
/* Error if no occurances found */
if(Count < min_count)
{
printf(ERRTAG "[Line %d] Expected node '%s' to have %d "
"child elements, but none found.\n", Node->line, Node->name, min_count);
exit(1);
}
return Count;
}
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| void CountTokensInString | ( | INP const char * | Str, |
| OUTP int * | Num, | ||
| OUTP int * | Len | ||
| ) |
Count tokens and length in all the Text children nodes of current node.
Definition at line 165 of file read_xml_util.c.
{
boolean InToken;
*Num = 0;
*Len = 0;
InToken = FALSE;
while(*Str)
{
if(IsWhitespace(*Str))
{
InToken = FALSE;
}
else
{
if(!InToken)
{
++(*Num);
}
++(*Len);
InToken = TRUE;
}
++Str; /* Advance pointer */
}
}
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Finds child element with given name and returns it. Errors out if more than one instance exists.
Definition at line 12 of file read_xml_util.c.
{
ezxml_t Cur;
/* Find the first node of correct name */
Cur = ezxml_child(Parent, Name);
/* Error out if node isn't found but they required it */
if(Required)
{
if(NULL == Cur)
{
printf(ERRTAG
"[LINE %d] Element '%s' not found within element '%s'.\n", Parent->line,
Name, Parent->name);
exit(1);
}
}
/* Look at next tag with same name and error out if exists */
if(Cur != NULL && Cur->next)
{
printf(ERRTAG "[LINE %d] Element '%s' found twice within element '%s'.\n", Parent->line,
Name, Parent->name);
exit(1);
}
return Cur;
}
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Finds child element with given name and returns it.
Definition at line 42 of file read_xml_util.c.
{
ezxml_t Cur;
/* Find the first node of correct name */
Cur = ezxml_child(Parent, Name);
/* Error out if node isn't found but they required it */
if(Required)
{
if(NULL == Cur)
{
printf(ERRTAG
"[LINE %d] Element '%s' not found within element '%s'.\n", Parent->line,
Name, Parent->name);
exit(1);
}
}
return Cur;
}
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Definition at line 143 of file read_xml_util.c.
{
const char *Res;
Res = ezxml_attr(Parent, Name);
if(Required)
{
if(NULL == Res)
{
printf(ERRTAG
"[Line %d] Required property '%s' not found for element '%s'.\n", Parent->line,
Name, Parent->name);
exit(1);
}
}
return Res;
}
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| void FreeNode | ( | INOUTP ezxml_t | Node | ) |
Checks that the node has no remaining child nodes or property nodes, then unlinks the node from the tree which updates pointers and frees the memory
Definition at line 85 of file read_xml_util.c.
{
ezxml_t Cur;
char *Txt;
/* Shouldn't have unprocessed properties */
if(Node->attr[0])
{
printf(ERRTAG "[LINE %d] Node '%s' has invalid property %s=\"%s\".\n", Node->line,
Node->name, Node->attr[0], Node->attr[1]);
exit(1);
}
/* Shouldn't have non-whitespace text */
Txt = Node->txt;
while(*Txt)
{
if(!IsWhitespace(*Txt))
{
printf(ERRTAG
"[LINE %d] Node '%s' has unexpected text '%s' within it.\n", Node->line,
Node->name, Node->txt);
exit(1);
}
++Txt;
}
/* We shouldn't have child items left */
Cur = Node->child;
if(Cur)
{
printf(ERRTAG "[LINE %d] Node '%s' has invalid child node '%s'.\n", Node->line,
Node->name, Cur->name);
exit(1);
}
/* Now actually unlink and free the node */
ezxml_remove(Node);
}
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| boolean GetBooleanProperty | ( | INP ezxml_t | Parent, |
| INP const char * | Name, | ||
| INP boolean | Required, | ||
| INP boolean | default_value | ||
| ) |
Find boolean attribute matching Name in XML tag Parent and return it if exists. Removes attribute from Parent
Definition at line 371 of file read_xml_util.c.
{
const char * Prop;
boolean property_value;
property_value = default_value;
Prop = FindProperty(Parent, Name, Required);
if(Prop)
{
if((strcmp(Prop, "false") == 0) ||
(strcmp(Prop, "FALSE") == 0) ||
(strcmp(Prop, "False") == 0)) {
property_value = FALSE;
} else if ((strcmp(Prop, "true") == 0) ||
(strcmp(Prop, "TRUE") == 0) ||
(strcmp(Prop, "True") == 0)) {
property_value = TRUE;
} else {
printf(ERRTAG "[LINE %d] Unknown value %s for boolean attribute %s in %s", Parent->line,
Prop, Name, Parent->name);
exit(1);
}
ezxml_set_attr(Parent, Name, NULL);
}
return property_value;
}
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| float GetFloatProperty | ( | INP ezxml_t | Parent, |
| INP const char * | Name, | ||
| INP boolean | Required, | ||
| INP float | default_value | ||
| ) |
Find floating-point attribute matching Name in XML tag Parent and return it if exists. Removes attribute from Parent
Definition at line 350 of file read_xml_util.c.
{
const char * Prop;
float property_value;
property_value = default_value;
Prop = FindProperty(Parent, Name, Required);
if(Prop)
{
property_value = atof(Prop);
ezxml_set_attr(Parent, Name, NULL);
}
return property_value;
}
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| int GetIntProperty | ( | INP ezxml_t | Parent, |
| INP const char * | Name, | ||
| INP boolean | Required, | ||
| INP int | default_value | ||
| ) |
Find integer attribute matching Name in XML tag Parent and return it if exists. Removes attribute from Parent
Definition at line 330 of file read_xml_util.c.
{
const char * Prop;
int property_value;
property_value = default_value;
Prop = FindProperty(Parent, Name, Required);
if(Prop)
{
property_value = my_atoi(Prop);
ezxml_set_attr(Parent, Name, NULL);
}
return property_value;
}
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| char** GetNodeTokens | ( | INP ezxml_t | Node | ) |
Returns a token list of the text nodes of a given node. This unlinks all the text nodes from the document
Definition at line 195 of file read_xml_util.c.
{
int Count, Len;
char *Cur, *Dst;
boolean InToken;
char **Tokens;
/* Count the tokens and find length of token data */
CountTokensInString(Node->txt, &Count, &Len);
/* Error out if no tokens found */
if(Count < 1)
{
return NULL;
}
Len = (sizeof(char) * Len) + /* Length of actual data */
(sizeof(char) * Count); /* Null terminators */
/* Alloc the pointer list and data list. Count the final
* empty string we will use as list terminator */
Tokens = (char **)my_malloc(sizeof(char *) * (Count + 1));
Dst = (char *)my_malloc(sizeof(char) * Len);
Count = 0;
/* Copy data to tokens */
Cur = Node->txt;
InToken = FALSE;
while(*Cur)
{
if(IsWhitespace(*Cur))
{
if(InToken)
{
*Dst = '\0';
++Dst;
}
InToken = FALSE;
}
else
{
if(!InToken)
{
Tokens[Count] = Dst;
++Count;
}
*Dst = *Cur;
++Dst;
InToken = TRUE;
}
++Cur;
}
if(InToken)
{ /* Null term final token */
*Dst = '\0';
++Dst;
}
ezxml_set_txt(Node, "");
Tokens[Count] = NULL; /* End of tokens marker is a NULL */
/* Return the list */
return Tokens;
}
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| boolean IsWhitespace | ( | char | c | ) |
Returns TRUE if character is whatspace between tokens
Definition at line 128 of file read_xml_util.c.
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| char** LookaheadNodeTokens | ( | INP ezxml_t | Node | ) |
Returns a token list of the text nodes of a given node. This does not unlink the text nodes from the document
Definition at line 264 of file read_xml_util.c.
{
int Count, Len;
char *Cur, *Dst;
boolean InToken;
char **Tokens;
/* Count the tokens and find length of token data */
CountTokensInString(Node->txt, &Count, &Len);
/* Error out if no tokens found */
if(Count < 1)
{
return NULL;
}
Len = (sizeof(char) * Len) + /* Length of actual data */
(sizeof(char) * Count); /* Null terminators */
/* Alloc the pointer list and data list. Count the final
* empty string we will use as list terminator */
Tokens = (char **)my_malloc(sizeof(char *) * (Count + 1));
Dst = (char *)my_malloc(sizeof(char) * Len);
Count = 0;
/* Copy data to tokens */
Cur = Node->txt;
InToken = FALSE;
while(*Cur)
{
if(IsWhitespace(*Cur))
{
if(InToken)
{
*Dst = '\0';
++Dst;
}
InToken = FALSE;
}
else
{
if(!InToken)
{
Tokens[Count] = Dst;
++Count;
}
*Dst = *Cur;
++Dst;
InToken = TRUE;
}
++Cur;
}
if(InToken)
{ /* Null term final token */
*Dst = '\0';
++Dst;
}
Tokens[Count] = NULL; /* End of tokens marker is a NULL */
/* Return the list */
return Tokens;
}
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