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authorDenis Vlasenko2008-07-16 22:12:18 +0000
committerDenis Vlasenko2008-07-16 22:12:18 +0000
commitc01340fe26b76e172805ff641ad9af6bc45cdc91 (patch)
tree1b3b57ef2fd7441bb91410b89f763056279baddf /libbb/parse_config.c
parent38e54f1c1384e76adafb4e611a6bd456e4351d42 (diff)
downloadbusybox-c01340fe26b76e172805ff641ad9af6bc45cdc91.zip
busybox-c01340fe26b76e172805ff641ad9af6bc45cdc91.tar.gz
update of config file parser from Vladimir
Diffstat (limited to 'libbb/parse_config.c')
-rw-r--r--libbb/parse_config.c106
1 files changed, 7 insertions, 99 deletions
diff --git a/libbb/parse_config.c b/libbb/parse_config.c
index 6612db3..e63204b 100644
--- a/libbb/parse_config.c
+++ b/libbb/parse_config.c
@@ -31,101 +31,6 @@ Typical usage:
*/
-#if !PARSER_STDIO_BASED
-
-char* FAST_FUNC config_open(parser_t *parser, const char *filename)
-{
- // empty file configures nothing!
- char *data = xmalloc_open_read_close(filename, NULL);
- if (!data)
- return data;
-
- // convert 0x5c 0x0a (backslashes at the very end of line) to 0x20 0x20 (spaces)
- for (char *s = data; (s = strchr(s, '\\')) != NULL; ++s)
- if ('\n' == s[1]) {
- s[0] = s[1] = ' ';
- }
-
- // init parser
- parser->line = parser->data = data;
- parser->lineno = 0;
-
- return data;
-}
-
-void FAST_FUNC config_close(parser_t *parser)
-{
- // for now just free config data
- free(parser->data);
-}
-
-char* FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mintokens, const char *delims, char comment)
-{
- char *ret, *line;
- int noreduce = (ntokens<0); // do not treat subsequent delimiters as one delimiter
- if (ntokens < 0)
- ntokens = -ntokens;
- ret = line = parser->line;
- // nullify tokens
- memset(tokens, 0, sizeof(void *) * ntokens);
- // now split to lines
- while (*line) {
- int token_num = 0;
- // limit the line
- char *ptr = strchrnul(line, '\n');
- *ptr++ = '\0';
- // line number
- parser->lineno++;
- // comments mean EOLs
- if (comment)
- *strchrnul(line, comment) = '\0';
- // skip leading delimiters
- while (*line && strchr(delims, *line))
- line++;
- // skip empty lines
- if (*line) {
- char *s;
- // now split line to tokens
- s = line;
- while (s) {
- char *p;
- // get next token
- if (token_num+1 >= ntokens)
- break;
- p = s;
- while (*p && !strchr(delims, *p))
- p++;
- if (!*p)
- break;
- *p++ = '\0';
- // pin token
- if (noreduce || *s) {
- tokens[token_num++] = s;
-//bb_error_msg("L[%d] T[%s]", token_num, s);
- }
- s = p;
- }
- // non-empty remainder is also a token. So if ntokens == 0, we just return the whole line
- if (s && (noreduce || *s))
- tokens[token_num++] = s;
- // sanity check: have we got all required tokens?
- if (token_num < mintokens)
- bb_error_msg_and_die("bad line %u, %d tokens found, %d needed", parser->lineno, token_num, mintokens);
- // advance data for the next call
- line = ptr;
- break;
- }
- // line didn't contain any token -> try next line
- ret = line = ptr;
- }
- parser->line = line;
-
- // return current line. caller must check *ret to determine whether to continue
- return ret;
-}
-
-#else // stdio-based
-
FILE* FAST_FUNC config_open(parser_t *parser, const char *filename)
{
// empty file configures nothing!
@@ -142,10 +47,12 @@ FILE* FAST_FUNC config_open(parser_t *parser, const char *filename)
void FAST_FUNC config_close(parser_t *parser)
{
+ free(parser->line);
+ free(parser->data);
fclose(parser->fp);
}
-char* FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mintokens, const char *delims, char comment)
+int FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mintokens, const char *delims, char comment)
{
char *line, *q;
int token_num, len;
@@ -160,6 +67,8 @@ char* FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mi
// free used line
free(parser->line);
parser->line = NULL;
+ free(parser->data);
+ parser->data = NULL;
while (1) {
int n;
@@ -211,6 +120,7 @@ char* FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mi
// store line
parser->line = line = xrealloc(line, len + 1);
+ parser->data = xstrdup(line);
// now split line to tokens
//TODO: discard consecutive delimiters?
@@ -241,7 +151,5 @@ char* FAST_FUNC config_read(parser_t *parser, char **tokens, int ntokens, int mi
bb_error_msg_and_die("bad line %u: %d tokens found, %d needed",
parser->lineno, token_num, mintokens);
- return parser->line; // maybe token_num instead?
+ return token_num;
}
-
-#endif