-/*
- * inih -- simple .INI file parser
- *
- * The "inih" library is distributed under the New BSD license:
- *
- * Copyright (C) 2009 Brush Technology - All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Brush Technology nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY BRUSH TECHNOLOGY ''AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL BRUSH TECHNOLOGY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://code.google.com/p/inih/
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <common/common.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 - 1);
- dest[size - 1] = '\0';
- return dest;
-}
-
-/* See documentation in header file. */
-int ini_parse_file(FILE* file, ini_entry_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];
-#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*)zmalloc(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) < 0 &&
- !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) < 0 &&
- !error) {
- error = lineno;
- }
- }
- else if (!error) {
- /* No '=' or ':' found on name[=:]value line */
- error = lineno;
- }
- }
- }
-
-#if !INI_USE_STACK
- free(line);
-#endif
-
- return error;
-}
-
-/* See documentation in header file. */
-int ini_parse(const char* filename, ini_entry_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;
-}
projects / lttng-tools.git / blobdiff