X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=util%2Fstring-util.c;h=de8430b2add34dea3fdf52507cf442c420cd170f;hp=b0108811903b27153dcaece1fa10b893234c3b9f;hb=HEAD;hpb=040c3236afcf95bead0324a48c2e0b9cd7934993

diff --git a/util/string-util.c b/util/string-util.c
index b0108811..03d7648d 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)
@@ -37,12 +38,36 @@ 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, last_nonspace = 0;
+
+    /* Skip initial unescaped delimiters and whitespace */
+    while (*s && (*s == delim || isspace (*s)))
+	s++;
+
+    while (s[count] && (escaping || s[count] != delim)) {
+	if (! isspace (s[count]))
+	    last_nonspace = count;
+	escaping = (s[count] == '\\');
+	count++;
+    }
+
+    if (count == 0)
+	return NULL;
+
+    *len = last_nonspace + 1;
+    return s;
+}
+
 const char *
 strtok_len_c (const char *s, const char *delim, size_t *len)
 {
     /* strtok_len is already const-safe, but we can't express both
      * versions in the C type system. */
-    return strtok_len ((char*)s, delim, len);
+    return strtok_len ((char *) s, delim, len);
 }
 
 char *
@@ -60,7 +85,7 @@ sanitize_string (const void *ctx, const char *str)
     for (loop = out; *loop; loop++) {
 	if (*loop == '\t' || *loop == '\n')
 	    *loop = ' ';
-	else if ((unsigned char)(*loop) < 32)
+	else if ((unsigned char) (*loop) < 32)
 	    *loop = '?';
     }
 
@@ -87,9 +112,9 @@ make_boolean_term (void *ctx, const char *prefix, const char *term,
      * beginning, and anything containing non-ASCII text. */
     if (! term[0])
 	need_quoting = 1;
-    for (in = term; *in && !need_quoting; in++)
+    for (in = term; *in && ! need_quoting; in++)
 	if (is_unquoted_terminator (*in) || *in == '"' || *in == '('
-	    || (unsigned char)*in > 127)
+	    || (unsigned char) *in > 127)
 	    need_quoting = 1;
 
     if (need_quoting)
@@ -141,7 +166,7 @@ make_boolean_term (void *ctx, const char *prefix, const char *term,
     return 0;
 }
 
-static const char*
+const char *
 skip_space (const char *str)
 {
     while (*str && isspace ((unsigned char) *str))
@@ -154,11 +179,13 @@ parse_boolean_term (void *ctx, const char *str,
 		    char **prefix_out, char **term_out)
 {
     int err = EINVAL;
+
     *prefix_out = *term_out = NULL;
 
     /* Parse prefix */
     str = skip_space (str);
     const char *pos = strchr (str, ':');
+
     if (! pos || pos == str)
 	goto FAIL;
     *prefix_out = talloc_strndup (ctx, str, pos - str);
@@ -193,7 +220,7 @@ parse_boolean_term (void *ctx, const char *str,
 	}
 	/* Did the term terminate without a closing quote or is there
 	 * trailing text after the closing quote? */
-	if (!closed || *pos)
+	if (! closed || *pos)
 	    goto FAIL;
 	*out = '\0';
     } else {
@@ -215,7 +242,7 @@ parse_boolean_term (void *ctx, const char *str,
     }
     return 0;
 
- FAIL:
+  FAIL:
     talloc_free (*prefix_out);
     talloc_free (*term_out);
     errno = err;
@@ -230,9 +257,9 @@ strcmp_null (const char *s1, const char *s2)
     else if (! s1 && ! s2)
 	return 0;
     else if (s1)
-	return 1;	/* s1 (non-NULL) is greater than s2 (NULL) */
+	return 1;       /* s1 (non-NULL) is greater than s2 (NULL) */
     else
-	return -1;	/* s1 (NULL) is less than s2 (non-NULL) */
+	return -1;      /* s1 (NULL) is less than s2 (non-NULL) */
 }
 
 int
@@ -248,6 +275,7 @@ strcase_hash (const void *ptr)
 
     /* This is the djb2 hash. */
     unsigned int hash = 5381;
+
     while (s && *s) {
 	hash = ((hash << 5) + hash) + tolower (*s);
 	s++;