mirror of
https://github.com/parasyte/alt64
synced 2024-11-02 08:15:07 -04:00
302 lines
7.9 KiB
C
302 lines
7.9 KiB
C
/* inih -- simple .INI file parser
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inih is released under the New BSD license (see LICENSE.txt). Go to the project
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home page for more info:
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http://code.google.com/p/inih/
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include "ini.h"
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#if !INI_USE_STACK
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#include <stdlib.h>
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#endif
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#define MAX_SECTION 50
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#define MAX_NAME 50
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/* Strip whitespace chars off end of given string, in place. Return s. */
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static char* rstrip(char* s)
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{
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char* p = s + strlen(s);
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while (p > s && isspace((unsigned char)(*--p)))
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*p = '\0';
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return s;
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}
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/* Return pointer to first non-whitespace char in given string. */
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static char* lskip(const char* s)
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{
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while (*s && isspace((unsigned char)(*s)))
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s++;
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return (char*)s;
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}
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/* Return pointer to first char c or ';' comment in given string, or pointer to
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null at end of string if neither found. ';' must be prefixed by a whitespace
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character to register as a comment. */
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static char* find_char_or_comment(const char* s, char c)
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{
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int was_whitespace = 0;
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while (*s && *s != c && !(was_whitespace && *s == ';')) {
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was_whitespace = isspace((unsigned char)(*s));
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s++;
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}
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return (char*)s;
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}
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/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
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static char* strncpy0(char* dest, const char* src, size_t size)
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{
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strncpy(dest, src, size);
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dest[size - 1] = '\0';
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return dest;
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}
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/* See documentation in header file. */
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int ini_parse_str(char* ini_string,
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int (*handler)(void*, const char*, const char*,
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const char*),
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void* user)
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{
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/* Uses a fair bit of stack (use heap instead if you need to) */
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#if INI_USE_STACK
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char line[INI_MAX_LINE];
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#else
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char* line;
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#endif
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char section[MAX_SECTION] = "";
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char prev_name[MAX_NAME] = "";
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char* start;
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char* end;
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char* name;
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char* value;
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int lineno = 0;
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int error = 0;
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#if !INI_USE_STACK
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line = (char*)malloc(INI_MAX_LINE);
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if (!line) {
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return -2;
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}
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#endif
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int i=1;
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char *ptr;
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// initialisieren und ersten Abschnitt erstellen
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ptr = strtok(ini_string, "\n");
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/* Scan through file line by line */
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while(ptr != NULL) {
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sprintf(line, "%s\n",ptr);
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ptr = strtok(NULL, "\n");
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// while (line=gets( ini_string) != NULL) {
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lineno++;
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start = line;
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#if INI_ALLOW_BOM
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if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
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(unsigned char)start[1] == 0xBB &&
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(unsigned char)start[2] == 0xBF) {
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start += 3;
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}
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#endif
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start = lskip(rstrip(start));
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if (*start == ';' || *start == '#') {
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/* Per Python ConfigParser, allow '#' comments at start of line */
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}
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#if INI_ALLOW_MULTILINE
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else if (*prev_name && *start && start > line) {
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/* Non-black line with leading whitespace, treat as continuation
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of previous name's value (as per Python ConfigParser). */
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if (!handler(user, section, prev_name, start) && !error)
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error = lineno;
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}
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#endif
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else if (*start == '[') {
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/* A "[section]" line */
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end = find_char_or_comment(start + 1, ']');
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if (*end == ']') {
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*end = '\0';
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strncpy0(section, start + 1, sizeof(section));
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*prev_name = '\0';
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}
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else if (!error) {
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/* No ']' found on section line */
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error = lineno;
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}
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}
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else if (*start && *start != ';') {
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/* Not a comment, must be a name[=:]value pair */
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end = find_char_or_comment(start, '=');
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if (*end != '=') {
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end = find_char_or_comment(start, ':');
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}
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if (*end == '=' || *end == ':') {
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*end = '\0';
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name = rstrip(start);
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value = lskip(end + 1);
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end = find_char_or_comment(value, '\0');
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if (*end == ';')
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*end = '\0';
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rstrip(value);
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/* Valid name[=:]value pair found, call handler */
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strncpy0(prev_name, name, sizeof(prev_name));
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if (!handler(user, section, name, value) && !error)
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error = lineno;
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}
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else if (!error) {
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/* No '=' or ':' found on name[=:]value line */
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error = lineno;
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}
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}
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}
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#if !INI_USE_STACK
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free(line);
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#endif
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return error;
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}
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/* See documentation in header file. */
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int ini_parse_file(FILE* file,
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int (*handler)(void*, const char*, const char*,
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const char*),
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void* user)
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{
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/* Uses a fair bit of stack (use heap instead if you need to) */
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#if INI_USE_STACK
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char line[INI_MAX_LINE];
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#else
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char* line;
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#endif
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char section[MAX_SECTION] = "";
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char prev_name[MAX_NAME] = "";
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char* start;
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char* end;
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char* name;
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char* value;
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int lineno = 0;
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int error = 0;
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#if !INI_USE_STACK
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line = (char*)malloc(INI_MAX_LINE);
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if (!line) {
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return -2;
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}
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#endif
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/* Scan through file line by line */
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while (fgets(line, INI_MAX_LINE, file) != NULL) {
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lineno++;
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start = line;
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#if INI_ALLOW_BOM
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if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
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(unsigned char)start[1] == 0xBB &&
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(unsigned char)start[2] == 0xBF) {
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start += 3;
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}
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#endif
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start = lskip(rstrip(start));
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if (*start == ';' || *start == '#') {
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/* Per Python ConfigParser, allow '#' comments at start of line */
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}
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#if INI_ALLOW_MULTILINE
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else if (*prev_name && *start && start > line) {
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/* Non-black line with leading whitespace, treat as continuation
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of previous name's value (as per Python ConfigParser). */
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if (!handler(user, section, prev_name, start) && !error)
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error = lineno;
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}
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#endif
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else if (*start == '[') {
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/* A "[section]" line */
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end = find_char_or_comment(start + 1, ']');
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if (*end == ']') {
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*end = '\0';
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strncpy0(section, start + 1, sizeof(section));
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*prev_name = '\0';
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}
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else if (!error) {
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/* No ']' found on section line */
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error = lineno;
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}
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}
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else if (*start && *start != ';') {
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/* Not a comment, must be a name[=:]value pair */
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end = find_char_or_comment(start, '=');
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if (*end != '=') {
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end = find_char_or_comment(start, ':');
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}
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if (*end == '=' || *end == ':') {
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*end = '\0';
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name = rstrip(start);
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value = lskip(end + 1);
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end = find_char_or_comment(value, '\0');
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if (*end == ';')
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*end = '\0';
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rstrip(value);
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/* Valid name[=:]value pair found, call handler */
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strncpy0(prev_name, name, sizeof(prev_name));
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if (!handler(user, section, name, value) && !error)
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error = lineno;
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}
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else if (!error) {
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/* No '=' or ':' found on name[=:]value line */
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error = lineno;
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}
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}
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}
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#if !INI_USE_STACK
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free(line);
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#endif
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return error;
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}
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/* See documentation in header file. */
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int ini_parse(const char* filename,
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int (*handler)(void*, const char*, const char*, const char*),
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void* user)
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{
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FILE* file;
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int error;
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// file = fopen(filename, "r");
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fputs(filename, file);
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if (!file)
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return -1;
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error = ini_parse_file(file, handler, user);
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fclose(file);
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return error;
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}
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