diff options
Diffstat (limited to 'source/blender/blenlib/intern/string.c')
| -rw-r--r-- | source/blender/blenlib/intern/string.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/string.c b/source/blender/blenlib/intern/string.c index 843f6b62735..fa4bcbc26bc 100644 --- a/source/blender/blenlib/intern/string.c +++ b/source/blender/blenlib/intern/string.c @@ -170,6 +170,54 @@ int BLI_strncasecmp(const char *s1, const char *s2, int n) { return 0; } +/* natural string compare, keeping numbers in order */ +int BLI_natstrcmp(const char *s1, const char *s2) +{ + int d1= 0, d2= 0; + + /* if both chars are numeric, to a strtol(). + then increase string deltas as long they are + numeric, else do a tolower and char compare */ + + while(1) { + char c1 = tolower(s1[d1]); + char c2 = tolower(s2[d2]); + + if( isdigit(c1) && isdigit(c2) ) { + int val1, val2; + + val1= (int)strtol(s1+d1, (char **)NULL, 10); + val2= (int)strtol(s2+d2, (char **)NULL, 10); + + if (val1<val2) { + return -1; + } else if (val1>val2) { + return 1; + } + d1++; + while( isdigit(s1[d1]) ) + d1++; + d2++; + while( isdigit(s2[d2]) ) + d2++; + + c1 = tolower(s1[d1]); + c2 = tolower(s2[d2]); + } + + if (c1<c2) { + return -1; + } else if (c1>c2) { + return 1; + } else if (c1==0) { + break; + } + d1++; + d2++; + } + return 0; +} + void BLI_timestr(double _time, char *str) { /* format 00:00:00.00 (hr:min:sec) string has to be 12 long */ |