diff options
Diffstat (limited to 'lib/util')
-rw-r--r-- | lib/util/util.c | 100 | ||||
-rw-r--r-- | lib/util/util.h | 15 |
2 files changed, 115 insertions, 0 deletions
diff --git a/lib/util/util.c b/lib/util/util.c index 988d8f9fa0..1f31f55e8b 100644 --- a/lib/util/util.c +++ b/lib/util/util.c @@ -836,4 +836,104 @@ _PUBLIC_ size_t utf16_len_n(const void *src, size_t n) return len; } +/** + * @file + * @brief String utilities. + **/ + +static bool next_token_internal_talloc(TALLOC_CTX *ctx, + const char **ptr, + char **pp_buff, + const char *sep, + bool ltrim) +{ + char *s; + char *saved_s; + char *pbuf; + bool quoted; + size_t len=1; + + *pp_buff = NULL; + if (!ptr) { + return(false); + } + + s = (char *)*ptr; + + /* default to simple separators */ + if (!sep) { + sep = " \t\n\r"; + } + + /* find the first non sep char, if left-trimming is requested */ + if (ltrim) { + while (*s && strchr_m(sep,*s)) { + s++; + } + } + + /* nothing left? */ + if (!*s) { + return false; + } + + /* When restarting we need to go from here. */ + saved_s = s; + + /* Work out the length needed. */ + for (quoted = false; *s && + (quoted || !strchr_m(sep,*s)); s++) { + if (*s == '\"') { + quoted = !quoted; + } else { + len++; + } + } + + /* We started with len = 1 so we have space for the nul. */ + *pp_buff = talloc_array(ctx, char, len); + if (!*pp_buff) { + return false; + } + + /* copy over the token */ + pbuf = *pp_buff; + s = saved_s; + for (quoted = false; *s && + (quoted || !strchr_m(sep,*s)); s++) { + if ( *s == '\"' ) { + quoted = !quoted; + } else { + *pbuf++ = *s; + } + } + + *ptr = (*s) ? s+1 : s; + *pbuf = 0; + + return true; +} + +bool next_token_talloc(TALLOC_CTX *ctx, + const char **ptr, + char **pp_buff, + const char *sep) +{ + return next_token_internal_talloc(ctx, ptr, pp_buff, sep, true); +} + +/* + * Get the next token from a string, return false if none found. Handles + * double-quotes. This version does not trim leading separator characters + * before looking for a token. + */ + +bool next_token_no_ltrim_talloc(TALLOC_CTX *ctx, + const char **ptr, + char **pp_buff, + const char *sep) +{ + return next_token_internal_talloc(ctx, ptr, pp_buff, sep, false); +} + diff --git a/lib/util/util.h b/lib/util/util.h index 27f94cd685..1f6e3b193b 100644 --- a/lib/util/util.h +++ b/lib/util/util.h @@ -204,6 +204,21 @@ _PUBLIC_ void display_set_stderr(void); /* The following definitions come from lib/util/util_str.c */ +bool next_token_talloc(TALLOC_CTX *ctx, + const char **ptr, + char **pp_buff, + const char *sep); + +/** + * Get the next token from a string, return false if none found. Handles + * double-quotes. This version does not trim leading separator characters + * before looking for a token. + */ +bool next_token_no_ltrim_talloc(TALLOC_CTX *ctx, + const char **ptr, + char **pp_buff, + const char *sep); + /** Trim the specified elements off the front and back of a string. |