mirror of
https://github.com/lxsang/sysmond.git
synced 2024-09-07 12:36:39 +02:00
186 lines
4.8 KiB
C
186 lines
4.8 KiB
C
/* inih -- simple .INI file parser
|
|
|
|
inih is released under the New BSD license (see LICENSE.txt). Go to the project
|
|
home page for more info:
|
|
|
|
https://github.com/benhoyt/inih
|
|
|
|
*/
|
|
|
|
#ifdef _MSC_VER
|
|
#define _CRT_SECURE_NO_WARNINGS
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
|
|
#include "ini.h"
|
|
|
|
#if !INI_USE_STACK
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
#define MAX_SECTION 50
|
|
#define MAX_NAME 50
|
|
|
|
/* Strip whitespace chars off end of given string, in place. Return s. */
|
|
static char* rstrip(char* s)
|
|
{
|
|
char* p = s + strlen(s);
|
|
while (p > s && isspace((unsigned char)(*--p)))
|
|
*p = '\0';
|
|
return s;
|
|
}
|
|
|
|
/* Return pointer to first non-whitespace char in given string. */
|
|
static char* lskip(const char* s)
|
|
{
|
|
while (*s && isspace((unsigned char)(*s)))
|
|
s++;
|
|
return (char*)s;
|
|
}
|
|
|
|
/* Return pointer to first char c or ';' comment in given string, or pointer to
|
|
null at end of string if neither found. ';' must be prefixed by a whitespace
|
|
character to register as a comment. */
|
|
static char* find_char_or_comment(const char* s, char c)
|
|
{
|
|
int was_whitespace = 0;
|
|
while (*s && *s != c && !(was_whitespace && *s == ';')) {
|
|
was_whitespace = isspace((unsigned char)(*s));
|
|
s++;
|
|
}
|
|
return (char*)s;
|
|
}
|
|
|
|
/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
|
|
static char* strncpy0(char* dest, const char* src, size_t size)
|
|
{
|
|
strncpy(dest, src, size);
|
|
dest[size - 1] = '\0';
|
|
return dest;
|
|
}
|
|
|
|
/* See documentation in header file. */
|
|
int ini_parse_file(FILE* file,
|
|
int (*handler)(void*, const char*, const char*,
|
|
const char*),
|
|
void* user)
|
|
{
|
|
/* Uses a fair bit of stack (use heap instead if you need to) */
|
|
#if INI_USE_STACK
|
|
char line[INI_MAX_LINE];
|
|
#else
|
|
char* line;
|
|
#endif
|
|
char section[MAX_SECTION] = "";
|
|
char prev_name[MAX_NAME] = "";
|
|
|
|
char* start;
|
|
char* end;
|
|
char* name;
|
|
char* value;
|
|
int lineno = 0;
|
|
int error = 0;
|
|
|
|
#if !INI_USE_STACK
|
|
line = (char*)malloc(INI_MAX_LINE);
|
|
if (!line) {
|
|
return -2;
|
|
}
|
|
#endif
|
|
|
|
/* Scan through file line by line */
|
|
while (fgets(line, INI_MAX_LINE, file) != NULL) {
|
|
lineno++;
|
|
|
|
start = line;
|
|
#if INI_ALLOW_BOM
|
|
if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
|
|
(unsigned char)start[1] == 0xBB &&
|
|
(unsigned char)start[2] == 0xBF) {
|
|
start += 3;
|
|
}
|
|
#endif
|
|
start = lskip(rstrip(start));
|
|
|
|
if (*start == ';' || *start == '#') {
|
|
/* Per Python ConfigParser, allow '#' comments at start of line */
|
|
}
|
|
#if INI_ALLOW_MULTILINE
|
|
else if (*prev_name && *start && start > line) {
|
|
/* Non-black line with leading whitespace, treat as continuation
|
|
of previous name's value (as per Python ConfigParser). */
|
|
if (!handler(user, section, prev_name, start) && !error)
|
|
error = lineno;
|
|
}
|
|
#endif
|
|
else if (*start == '[') {
|
|
/* A "[section]" line */
|
|
end = find_char_or_comment(start + 1, ']');
|
|
if (*end == ']') {
|
|
*end = '\0';
|
|
strncpy0(section, start + 1, sizeof(section));
|
|
*prev_name = '\0';
|
|
}
|
|
else if (!error) {
|
|
/* No ']' found on section line */
|
|
error = lineno;
|
|
}
|
|
}
|
|
else if (*start && *start != ';') {
|
|
/* Not a comment, must be a name[=:]value pair */
|
|
end = find_char_or_comment(start, '=');
|
|
if (*end != '=') {
|
|
end = find_char_or_comment(start, ':');
|
|
}
|
|
if (*end == '=' || *end == ':') {
|
|
*end = '\0';
|
|
name = rstrip(start);
|
|
value = lskip(end + 1);
|
|
end = find_char_or_comment(value, '\0');
|
|
if (*end == ';')
|
|
*end = '\0';
|
|
rstrip(value);
|
|
|
|
/* Valid name[=:]value pair found, call handler */
|
|
strncpy0(prev_name, name, sizeof(prev_name));
|
|
if (!handler(user, section, name, value) && !error)
|
|
error = lineno;
|
|
}
|
|
else if (!error) {
|
|
/* No '=' or ':' found on name[=:]value line */
|
|
error = lineno;
|
|
}
|
|
}
|
|
|
|
#if INI_STOP_ON_FIRST_ERROR
|
|
if (error)
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
#if !INI_USE_STACK
|
|
free(line);
|
|
#endif
|
|
|
|
return error;
|
|
}
|
|
|
|
/* See documentation in header file. */
|
|
int ini_parse(const char* filename,
|
|
int (*handler)(void*, const char*, const char*, const char*),
|
|
void* user)
|
|
{
|
|
FILE* file;
|
|
int error;
|
|
|
|
file = fopen(filename, "r");
|
|
if (!file)
|
|
return -1;
|
|
error = ini_parse_file(file, handler, user);
|
|
fclose(file);
|
|
return error;
|
|
}
|