organicmaps/icu
13
Fork 0
mirror of https://github.com/unicode-org/icu.git synced 2025-04-08 06:53:45 +00:00
Code Issues 1 Projects Releases Wiki Activity Actions 2

ICU-1923 add uprv_comparePropertyNames() to compare Unicode property [value] names loosely

Browse source 
X-SVN-Rev: 8763
This commit is contained in:
Markus Scherer 2002-06-01 00:33:55 +00:00
parent f1b42cdf55
commit 185ac97303
2 changed files with 64 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
icu4c/source/common/uprops.c
View file

@ -20,6 +20,7 @@
#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/uscript.h"
#include "cstring.h"
#include "unormimp.h"
#include "uprops.h"
@ -61,6 +62,54 @@
#define CGJ 0x34f
/**
* Unicode property names and property value names are compared
* "loosely". Property[Value]Aliases.txt say:
* "With loose matching of property names, the case distinctions, whitespace,
* and '_' are ignored."
*
* This function does just that, for ASCII (char *) name strings.
* It is almost identical to ucnv_compareNames() but also ignores
* ASCII White_Space characters (U+0009..U+000d).
*
* @internal
*/
U_CAPI int32_t U_EXPORT2
uprv_comparePropertyNames(const char *name1, const char *name2) {
int32_t rc;
unsigned char c1, c2;
for(;;) {
/* Ignore delimiters '-', '_', and ASCII White_Space */
while((c1=(unsigned char)*name1)=='-' || c1=='_' ||
c1==' ' || c1=='\t' || c1=='\n' || c1=='\v' || c1=='\f' || c1=='\r'
) {
++name1;
}
while((c2=(unsigned char)*name2)=='-' || c2=='_' ||
c2==' ' || c2=='\t' || c2=='\n' || c2=='\v' || c2=='\f' || c2=='\r'
) {
++name2;
}
/* If we reach the ends of both strings then they match */
if((c1|c2)==0) {
return 0;
}
/* Case-insensitive comparison */
if(c1!=c2) {
rc=(int32_t)(unsigned char)uprv_tolower(c1)-(int32_t)(unsigned char)uprv_tolower(c2);
if(rc!=0) {
return rc;
}
}
++name1;
++name2;
}
}
/* API functions ------------------------------------------------------------ */
U_CAPI void U_EXPORT2

15
icu4c/source/common/uprops.h
View file

@ -147,4 +147,19 @@ enum UEAWidthCode {
};
typedef enum UEAWidthCode UEAWidthCode;
/**
* Unicode property names and property value names are compared
* "loosely". Property[Value]Aliases.txt say:
* "With loose matching of property names, the case distinctions, whitespace,
* and '_' are ignored."
*
* This function does just that, for ASCII (char *) name strings.
* It is almost identical to ucnv_compareNames() but also ignores
* ASCII White_Space characters (U+0009..U+000d).
*
* @internal
*/
U_CAPI int32_t U_EXPORT2
uprv_comparePropertyNames(const char *name1, const char *name2);
#endif