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-rw-r--r--lib/util/util_str.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/lib/util/util_str.c b/lib/util/util_str.c
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+/*
+ Unix SMB/CIFS implementation.
+ Samba utility functions
+
+ Copyright (C) Andrew Tridgell 1992-2001
+ Copyright (C) Simo Sorce 2001-2002
+ Copyright (C) Martin Pool 2003
+ Copyright (C) James Peach 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "lib/util/samba_util.h"
+#include "system/locale.h"
+#include "smb_strtox.h"
+#undef strncasecmp
+#undef strcasemp
+
+/**
+ * @file
+ * @brief String utilities.
+ **/
+
+/**
+ * Parse a string containing a boolean value.
+ *
+ * val will be set to the read value.
+ *
+ * @retval true if a boolean value was parsed, false otherwise.
+ */
+_PUBLIC_ bool conv_str_bool(const char * str, bool * val)
+{
+ char * end = NULL;
+ long lval;
+
+ if (str == NULL || *str == '\0') {
+ return false;
+ }
+
+ lval = strtol(str, &end, 10 /* base */);
+ if (end == NULL || *end != '\0' || end == str) {
+ return set_boolean(str, val);
+ }
+
+ *val = (lval) ? true : false;
+ return true;
+}
+
+/**
+ * Convert a size specification like 16K into an integral number of bytes.
+ **/
+_PUBLIC_ bool conv_str_size_error(const char * str, uint64_t * val)
+{
+ char * end = NULL;
+ unsigned long long lval;
+ int error = 0;
+
+ if (str == NULL || *str == '\0') {
+ return false;
+ }
+
+ lval = smb_strtoull(str, &end, 10, &error, SMB_STR_STANDARD);
+ if (error != 0) {
+ return false;
+ }
+
+ if (*end) {
+ if (strwicmp(end, "K") == 0) {
+ lval *= 1024ULL;
+ } else if (strwicmp(end, "M") == 0) {
+ lval *= (1024ULL * 1024ULL);
+ } else if (strwicmp(end, "G") == 0) {
+ lval *= (1024ULL * 1024ULL * 1024ULL);
+ } else if (strwicmp(end, "T") == 0) {
+ lval *= (1024ULL * 1024ULL * 1024ULL * 1024ULL);
+ } else if (strwicmp(end, "P") == 0) {
+ lval *= (1024ULL * 1024ULL * 1024ULL * 1024ULL * 1024ULL);
+ } else {
+ return false;
+ }
+ }
+
+ *val = (uint64_t)lval;
+ return true;
+}
+
+/**
+ * Parse a uint64_t value from a string
+ *
+ * val will be set to the value read.
+ *
+ * @retval true if parsing was successful, false otherwise
+ */
+_PUBLIC_ bool conv_str_u64(const char * str, uint64_t * val)
+{
+ unsigned long long lval;
+ int error = 0;
+
+ if (str == NULL || *str == '\0') {
+ return false;
+ }
+
+ lval = smb_strtoull(str, NULL, 10, &error, SMB_STR_FULL_STR_CONV);
+ if (error != 0) {
+ return false;
+ }
+
+ *val = (uint64_t)lval;
+ return true;
+}
+
+/**
+ * Compare 2 strings.
+ *
+ * @note The comparison is case-insensitive.
+ **/
+_PUBLIC_ bool strequal(const char *s1, const char *s2)
+{
+ if (s1 == s2)
+ return true;
+ if (!s1 || !s2)
+ return false;
+
+ return strcasecmp_m(s1,s2) == 0;
+}
+
+/**
+ * @file
+ * @brief String utilities.
+ **/
+
+static bool next_token_internal_talloc(TALLOC_CTX *ctx,
+ const char **ptr,
+ char **pp_buff,
+ const char *sep,
+ bool ltrim)
+{
+ const char *s;
+ const char *saved_s;
+ char *pbuf;
+ bool quoted;
+ size_t len=1;
+
+ *pp_buff = NULL;
+ if (!ptr) {
+ return(false);
+ }
+
+ s = *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);
+}
+
+/**
+ * Get the next token from a string, return False if none found.
+ * Handles double-quotes.
+ *
+ * Based on a routine by GJC@VILLAGE.COM.
+ * Extensively modified by Andrew.Tridgell@anu.edu.au
+ **/
+_PUBLIC_ bool next_token(const char **ptr,char *buff, const char *sep, size_t bufsize)
+{
+ const char *s;
+ bool quoted;
+ size_t len=1;
+
+ if (!ptr)
+ return false;
+
+ s = *ptr;
+
+ /* default to simple separators */
+ if (!sep)
+ sep = " \t\n\r";
+
+ /* find the first non sep char */
+ while (*s && strchr_m(sep,*s))
+ s++;
+
+ /* nothing left? */
+ if (!*s)
+ return false;
+
+ /* copy over the token */
+ for (quoted = false; len < bufsize && *s && (quoted || !strchr_m(sep,*s)); s++) {
+ if (*s == '\"') {
+ quoted = !quoted;
+ } else {
+ len++;
+ *buff++ = *s;
+ }
+ }
+
+ *ptr = (*s) ? s+1 : s;
+ *buff = 0;
+
+ return true;
+}
+
+/**
+ Set a boolean variable from the text value stored in the passed string.
+ Returns true in success, false if the passed string does not correctly
+ represent a boolean.
+**/
+
+_PUBLIC_ bool set_boolean(const char *boolean_string, bool *boolean)
+{
+ if (strwicmp(boolean_string, "yes") == 0 ||
+ strwicmp(boolean_string, "true") == 0 ||
+ strwicmp(boolean_string, "on") == 0 ||
+ strwicmp(boolean_string, "1") == 0) {
+ *boolean = true;
+ return true;
+ } else if (strwicmp(boolean_string, "no") == 0 ||
+ strwicmp(boolean_string, "false") == 0 ||
+ strwicmp(boolean_string, "off") == 0 ||
+ strwicmp(boolean_string, "0") == 0) {
+ *boolean = false;
+ return true;
+ }
+ return false;
+}
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