summaryrefslogtreecommitdiff
path: root/src/core/wee-string.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/wee-string.c')
-rw-r--r--src/core/wee-string.c118
1 files changed, 55 insertions, 63 deletions
diff --git a/src/core/wee-string.c b/src/core/wee-string.c
index 4bf43094e..3c258ec94 100644
--- a/src/core/wee-string.c
+++ b/src/core/wee-string.c
@@ -394,12 +394,14 @@ string_toupper (const char *string)
}
/*
- * Compares two strings (locale and case independent).
+ * Compares two strings (case insensitive).
*
- * Returns:
- * -1: string1 < string2
- * 0: string1 == string2
- * 1: string1 > string2
+ * Returns: arithmetic result of subtracting the last compared char in string2
+ * (converted to lowercase) from the last compared char in string1 (converted
+ * to lowercase):
+ * < 0: string1 < string2
+ * 0: string1 == string2
+ * > 0: string1 > string2
*/
int
@@ -407,24 +409,21 @@ string_strcasecmp (const char *string1, const char *string2)
{
int diff;
- if (!string1 || !string2)
- return (string1) ? 1 : ((string2) ? -1 : 0);
-
- while (string1[0] && string2[0])
+ while (string1 && string1[0] && string2 && string2[0])
{
diff = utf8_charcasecmp (string1, string2);
if (diff != 0)
- return (diff < 0) ? -1 : 1;
+ return diff;
string1 = utf8_next_char (string1);
string2 = utf8_next_char (string2);
}
- return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0);
+ return utf8_charcasecmp (string1, string2);
}
/*
- * Compares two strings (locale and case independent) using a range.
+ * Compares two strings (case insensitive using a range).
*
* The range is the number of chars which can be converted from upper to lower
* case. For example 26 = all letters of alphabet, 29 = all letters + 3 chars.
@@ -435,10 +434,12 @@ string_strcasecmp (const char *string1, const char *string2)
* - range = 30: A-Z [ \ ] ^ ==> a-z { | } ~
* (ranges 29 and 30 are used by some protocols like IRC)
*
- * Returns:
- * -1: string1 < string2
- * 0: string1 == string2
- * 1: string1 > string2
+ * Returns: arithmetic result of subtracting the last compared char in string2
+ * (converted to lowercase) from the last compared char in string1 (converted
+ * to lowercase):
+ * < 0: string1 < string2
+ * 0: string1 == string2
+ * > 0: string1 > string2
*/
int
@@ -446,29 +447,28 @@ string_strcasecmp_range (const char *string1, const char *string2, int range)
{
int diff;
- if (!string1 || !string2)
- return (string1) ? 1 : ((string2) ? -1 : 0);
-
- while (string1[0] && string2[0])
+ while (string1 && string1[0] && string2 && string2[0])
{
diff = utf8_charcasecmp_range (string1, string2, range);
if (diff != 0)
- return (diff < 0) ? -1 : 1;
+ return diff;
string1 = utf8_next_char (string1);
string2 = utf8_next_char (string2);
}
- return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0);
+ return utf8_charcasecmp_range (string1, string2, range);
}
/*
- * Compares two strings with max length (locale and case independent).
+ * Compares two strings with max length (case insensitive).
*
- * Returns:
- * -1: string1 < string2
+ * Returns: arithmetic result of subtracting the last compared char in string2
+ * (converted to lowercase) from the last compared char in string1 (converted
+ * to lowercase):
+ * < 0: string1 < string2
* 0: string1 == string2
- * 1: string1 > string2
+ * > 0: string1 > string2
*/
int
@@ -476,15 +476,12 @@ string_strncasecmp (const char *string1, const char *string2, int max)
{
int count, diff;
- if (!string1 || !string2)
- return (string1) ? 1 : ((string2) ? -1 : 0);
-
count = 0;
- while ((count < max) && string1[0] && string2[0])
+ while ((count < max) && string1 && string1[0] && string2 && string2[0])
{
diff = utf8_charcasecmp (string1, string2);
if (diff != 0)
- return (diff < 0) ? -1 : 1;
+ return diff;
string1 = utf8_next_char (string1);
string2 = utf8_next_char (string2);
@@ -494,12 +491,11 @@ string_strncasecmp (const char *string1, const char *string2, int max)
if (count >= max)
return 0;
else
- return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0);
+ return utf8_charcasecmp (string1, string2);
}
/*
- * Compares two strings with max length (locale and case independent) using a
- * range.
+ * Compares two strings with max length (case insensitive using a range).
*
* The range is the number of chars which can be converted from upper to lower
* case. For example 26 = all letters of alphabet, 29 = all letters + 3 chars.
@@ -510,10 +506,12 @@ string_strncasecmp (const char *string1, const char *string2, int max)
* - range = 30: A-Z [ \ ] ^ ==> a-z { | } ~
* (ranges 29 and 30 are used by some protocols like IRC)
*
- * Returns:
- * -1: string1 < string2
- * 0: string1 == string2
- * 1: string1 > string2
+ * Returns: arithmetic result of subtracting the last compared char in string2
+ * (converted to lowercase) from the last compared char in string1 (converted
+ * to lowercase):
+ * < 0: string1 < string2
+ * 0: string1 == string2
+ * > 0: string1 > string2
*/
int
@@ -522,15 +520,12 @@ string_strncasecmp_range (const char *string1, const char *string2, int max,
{
int count, diff;
- if (!string1 || !string2)
- return (string1) ? 1 : ((string2) ? -1 : 0);
-
count = 0;
- while ((count < max) && string1[0] && string2[0])
+ while ((count < max) && string1 && string1[0] && string2 && string2[0])
{
diff = utf8_charcasecmp_range (string1, string2, range);
if (diff != 0)
- return (diff < 0) ? -1 : 1;
+ return diff;
string1 = utf8_next_char (string1);
string2 = utf8_next_char (string2);
@@ -540,16 +535,19 @@ string_strncasecmp_range (const char *string1, const char *string2, int max,
if (count >= max)
return 0;
else
- return (string1[0]) ? 1 : ((string2[0]) ? -1 : 0);
+ return utf8_charcasecmp_range (string1, string2, range);
}
/*
* Compares two strings, ignoring some chars.
*
- * Returns:
- * -1: string1 < string2
- * 0: string1 == string2
- * 1: string1 > string2
+ * Returns: arithmetic result of subtracting the last compared char in string2
+ * (converted to lowercase if case_sensitive is set to 0) from the last
+ * compared char in string1 (converted to lowercase if case_sensitive is set
+ * to 0):
+ * < 0: string1 < string2
+ * 0: string1 == string2
+ * > 0: string1 > string2
*/
int
@@ -558,9 +556,6 @@ string_strcmp_ignore_chars (const char *string1, const char *string2,
{
int diff;
- if (!string1 || !string2)
- return (string1) ? 1 : ((string2) ? -1 : 0);
-
while (string1 && string1[0] && string2 && string2[0])
{
/* skip ignored chars */
@@ -574,18 +569,18 @@ string_strcmp_ignore_chars (const char *string1, const char *string2,
}
/* end of one (or both) string(s) ? */
- if ((!string1 || !string1[0]) && (!string2 || !string2[0]))
- return 0;
- if ((!string1 || !string1[0]) && string2 && string2[0])
- return -1;
- if (string1 && string1[0] && (!string2 || !string2[0]))
- return 1;
+ if (!string1 || !string1[0] || !string2 || !string2[0])
+ {
+ return (case_sensitive) ?
+ utf8_charcmp (string1, string2) :
+ utf8_charcasecmp (string1, string2);
+ }
/* look at diff */
diff = (case_sensitive) ?
utf8_charcmp (string1, string2) : utf8_charcasecmp (string1, string2);
if (diff != 0)
- return (diff < 0) ? -1 : 1;
+ return diff;
string1 = utf8_next_char (string1);
string2 = utf8_next_char (string2);
@@ -600,11 +595,8 @@ string_strcmp_ignore_chars (const char *string1, const char *string2,
string2 = utf8_next_char (string2);
}
}
- if ((!string1 || !string1[0]) && string2 && string2[0])
- return -1;
- if (string1 && string1[0] && (!string2 || !string2[0]))
- return 1;
- return 0;
+ return (case_sensitive) ?
+ utf8_charcmp (string1, string2) : utf8_charcasecmp (string1, string2);
}
/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 13:35:38 +0000