From: David Bremner <david@tethera.net>
To: notmuch@notmuchmail.org
Cc: David Bremner <david@tethera.net>
Subject: [PATCH 09/24] util: add strsplit_len: simplified strtok with delimiter escaping
Date: Thu, 24 Dec 2020 20:42:13 -0400 [thread overview]
Message-ID: <20201225004228.647328-10-david@tethera.net> (raw)
In-Reply-To: <20201225004228.647328-1-david@tethera.net>
This will be used to make iterators for configuration values.
---
util/string-util.c | 23 +++++++++++++++++++++++
util/string-util.h | 14 ++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/util/string-util.c b/util/string-util.c
index de8430b2..27f8a26b 100644
--- a/util/string-util.c
+++ b/util/string-util.c
@@ -24,6 +24,7 @@
#include <ctype.h>
#include <errno.h>
+#include <stdbool.h>
char *
strtok_len (char *s, const char *delim, size_t *len)
@@ -37,6 +38,28 @@ strtok_len (char *s, const char *delim, size_t *len)
return *len ? s : NULL;
}
+const char *
+strsplit_len (const char *s, char delim, size_t *len)
+{
+ bool escaping = false;
+ size_t count = 0;
+
+ /* Skip initial unescaped delimiters */
+ while (*s && *s == delim)
+ s++;
+
+ while (s[count] && (escaping || s[count] != delim)) {
+ escaping = (s[count] == '\\');
+ count++;
+ }
+
+ if (count==0)
+ return NULL;
+
+ *len = count;
+ return s;
+}
+
const char *
strtok_len_c (const char *s, const char *delim, size_t *len)
{
diff --git a/util/string-util.h b/util/string-util.h
index fb95a740..80647c5f 100644
--- a/util/string-util.h
+++ b/util/string-util.h
@@ -26,6 +26,20 @@ char *strtok_len (char *s, const char *delim, size_t *len);
/* Const version of strtok_len. */
const char *strtok_len_c (const char *s, const char *delim, size_t *len);
+/* Simplified version of strtok_len, with a single delimiter.
+ * Handles escaping delimiters with \
+ * Usage pattern:
+ *
+ * const char *tok = input;
+ * const char *delim = ';';
+ * size_t tok_len = 0;
+ *
+ * while ((tok = strsplit_len (tok + tok_len, delim, &tok_len)) != NULL) {
+ * // do stuff with string tok of length tok_len
+ * }
+ */
+const char *strsplit_len (const char *s, char delim, size_t *len);
+
/* Return a talloced string with str sanitized.
*
* Whitespace characters (tabs and newlines) are replaced with spaces,
--
2.29.2
next prev parent reply other threads:[~2020-12-25 0:43 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-25 0:42 v2 Merged Config David Bremner
2020-12-25 0:42 ` [PATCH 01/24] lib: add _notmuch_string_map_set David Bremner
2020-12-25 0:42 ` [PATCH 02/24] lib: cache configuration information from database David Bremner
2020-12-25 0:42 ` [PATCH 03/24] lib: add stub for notmuch_database_open_with_config David Bremner
2020-12-26 13:13 ` David Bremner
2020-12-25 0:42 ` [PATCH 04/24] lib/open: add support for config profiles and default locations David Bremner
2020-12-25 0:42 ` [PATCH 05/24] CLI: generalize notmuch_config_mode_t David Bremner
2020-12-25 0:42 ` [PATCH 06/24] lib/config: add notmuch_config_key_{get,set} David Bremner
2020-12-25 0:42 ` [PATCH 07/24] lib/open: load default values for known configuration keys David Bremner
2020-12-25 0:42 ` [PATCH 08/24] CLI: add (unused) database argument to subcommands David Bremner
2020-12-25 0:42 ` David Bremner [this message]
2020-12-25 0:42 ` [PATCH 10/24] lib/config: add config values iterator David Bremner
2020-12-25 0:42 ` [PATCH 11/24] CLI/count: switch to new configuration framework David Bremner
2020-12-25 0:42 ` [PATCH 12/24] cli/dump: convert to new config framework David Bremner
2020-12-25 0:42 ` [PATCH 13/24] lib: add notmuch_config_get_bool David Bremner
2020-12-25 0:42 ` [PATCH 14/24] CLI/restore: convert to new config framework David Bremner
2020-12-25 0:42 ` [PATCH 15/24] CLI/insert: " David Bremner
2020-12-25 0:42 ` [PATCH 16/24] cli/reindex: convert " David Bremner
2020-12-25 0:42 ` [PATCH 17/24] CLI/reply: convert to " David Bremner
2020-12-25 0:42 ` [PATCH 18/24] CLI/{search,address}: convert to new configuration framework David Bremner
2020-12-25 0:42 ` [PATCH 19/24] cli/config: add accessor for config file name David Bremner
2020-12-25 0:42 ` [PATCH 20/24] CLI/show: mostly switch show to new config framework David Bremner
2020-12-25 0:42 ` [PATCH 21/24] cli/tag: convert " David Bremner
2020-12-25 0:42 ` [PATCH 22/24] lib/config: add _notmuch_config_cache David Bremner
2020-12-25 0:42 ` [PATCH 23/24] lib: split notmuch_database_compact David Bremner
2020-12-25 0:42 ` [PATCH 24/24] cli/compact: convert to new configuration framework David Bremner
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