ini.c File Reference

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "ini.h"

Classes
struct	ini_parse_string_ctx

Macros
#define	MAX_SECTION   50
#define	MAX_NAME   50
#define	HANDLER(u, s, n, v)   handler(u, s, n, v)

Functions
static char *	rstrip (char *s)
static char *	lskip (const char *s)
static char *	find_chars_or_comment (const char *s, const char *chars)
static char *	strncpy0 (char *dest, const char *src, size_t size)
int	ini_parse_stream (ini_reader reader, void *stream, ini_handler handler, void *user)
int	ini_parse_file (FILE *file, ini_handler handler, void *user)
int	ini_parse (const char *filename, ini_handler handler, void *user)
static char *	ini_reader_string (char *str, int num, void *stream)
int	ini_parse_string (const char *string, ini_handler handler, void *user)

Macro Definition Documentation

MAX_SECTION

#define MAX_SECTION   50

MAX_NAME

#define MAX_NAME   50

HANDLER

#define HANDLER	(		u,
			s,
			n,
			v
	)		handler(u, s, n, v)

Function Documentation

rstrip()

static char* rstrip ( char *  s )

static

{
    char* p = s + strlen(s);
    while (p > s && isspace((unsigned char)(*--p)))
        *p = '\0';
    return s;
}

Here is the caller graph for this function:

lskip()

static char* lskip ( const char *  s )

static

{
    while (*s && isspace((unsigned char)(*s)))
        s++;
    return (char*)s;
}

Here is the caller graph for this function:

find_chars_or_comment()

static char* find_chars_or_comment ( const char *  s, const char *  chars  )

static

{
#if INI_ALLOW_INLINE_COMMENTS
    int was_space = 0;
    while (*s && (!chars || !strchr(chars, *s)) &&
           !(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
        was_space = isspace((unsigned char)(*s));
        s++;
    }
#else
    while (*s && (!chars || !strchr(chars, *s))) {
        s++;
    }
#endif
    return (char*)s;
}

Here is the caller graph for this function:

strncpy0()

static char* strncpy0 ( char *  dest, const char *  src, size_t  size  )

static

{
    strncpy(dest, src, size - 1);
    dest[size - 1] = '\0';
    return dest;
}

Here is the caller graph for this function:

ini_parse_stream()

int ini_parse_stream	(	ini_reader	reader,
		void *	stream,
		ini_handler	handler,
		void *	user
	)

{
    /* Uses a fair bit of stack (use heap instead if you need to) */
#if INI_USE_STACK
    char line[INI_MAX_LINE];
    int max_line = INI_MAX_LINE;
#else
    char* line;
    size_t max_line = INI_INITIAL_ALLOC;
#endif
#if INI_ALLOW_REALLOC && !INI_USE_STACK
    char* new_line;
    size_t offset;
#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_INITIAL_ALLOC);
    if (!line) {
        return -2;
    }
#endif
 
#if INI_HANDLER_LINENO
#define HANDLER(u, s, n, v) handler(u, s, n, v, lineno)
#else
#define HANDLER(u, s, n, v) handler(u, s, n, v)
#endif
 
    /* Scan through stream line by line */
    while (reader(line, (int)max_line, stream) != NULL) {
#if INI_ALLOW_REALLOC && !INI_USE_STACK
        offset = strlen(line);
        while (offset == max_line - 1 && line[offset - 1] != '\n') {
            max_line *= 2;
            if (max_line > INI_MAX_LINE)
                max_line = INI_MAX_LINE;
            new_line = realloc(line, max_line);
            if (!new_line) {
                free(line);
                return -2;
            }
            line = new_line;
            if (reader(line + offset, (int)(max_line - offset), stream) == NULL)
                break;
            if (max_line >= INI_MAX_LINE)
                break;
            offset += strlen(line + offset);
        }
#endif
 
        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 (strchr(INI_START_COMMENT_PREFIXES, *start)) {
            /* Start-of-line comment */
        }
#if INI_ALLOW_MULTILINE
        else if (*prev_name && *start && start > line) {
            /* Non-blank 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_chars_or_comment(start + 1, "]");
            if (*end == ']') {
                *end = '\0';
                strncpy0(section, start + 1, sizeof(section));
                *prev_name = '\0';
#if INI_CALL_HANDLER_ON_NEW_SECTION
                if (!HANDLER(user, section, NULL, NULL) && !error)
                    error = lineno;
#endif
            }
            else if (!error) {
                /* No ']' found on section line */
                error = lineno;
            }
        }
        else if (*start) {
            /* Not a comment, must be a name[=:]value pair */
            end = find_chars_or_comment(start, "=:");
            if (*end == '=' || *end == ':') {
                *end = '\0';
                name = rstrip(start);
                value = end + 1;
#if INI_ALLOW_INLINE_COMMENTS
                end = find_chars_or_comment(value, NULL);
                if (*end)
                    *end = '\0';
#endif
                value = lskip(value);
                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 */
#if INI_ALLOW_NO_VALUE
                *end = '\0';
                name = rstrip(start);
                if (!HANDLER(user, section, name, NULL) && !error)
                    error = lineno;
#else
                error = lineno;
#endif
            }
        }
 
#if INI_STOP_ON_FIRST_ERROR
        if (error)
            break;
#endif
    }
 
#if !INI_USE_STACK
    free(line);
#endif
 
    return error;
}

Here is the call graph for this function:

Here is the caller graph for this function:

ini_parse_file()

int ini_parse_file	(	FILE *	file,
		ini_handler	handler,
		void *	user
	)

{
    return ini_parse_stream((ini_reader)fgets, file, handler, user);
}

Here is the call graph for this function:

Here is the caller graph for this function:

ini_parse()

int ini_parse	(	const char *	filename,
		ini_handler	handler,
		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;
}

Here is the call graph for this function:

ini_reader_string()

static char* ini_reader_string ( char *  str, int  num, void *  stream  )

static

                                                                 {
    ini_parse_string_ctx* ctx = (ini_parse_string_ctx*)stream;
    const char* ctx_ptr = ctx->ptr;
    size_t ctx_num_left = ctx->num_left;
    char* strp = str;
    char c;
 
    if (ctx_num_left == 0 || num < 2)
        return NULL;
 
    while (num > 1 && ctx_num_left != 0) {
        c = *ctx_ptr++;
        ctx_num_left--;
        *strp++ = c;
        if (c == '\n')
            break;
        num--;
    }
 
    *strp = '\0';
    ctx->ptr = ctx_ptr;
    ctx->num_left = ctx_num_left;
    return str;
}

Here is the caller graph for this function:

ini_parse_string()

int ini_parse_string	(	const char *	string,
		ini_handler	handler,
		void *	user
	)

                                                                          {
    ini_parse_string_ctx ctx;
 
    ctx.ptr = string;
    ctx.num_left = strlen(string);
    return ini_parse_stream((ini_reader)ini_reader_string, &ctx, handler,
                            user);
}

Here is the call graph for this function:

Here is the caller graph for this function: