diff options
Diffstat (limited to 'source/blender/blenlib/intern/util.c')
| -rw-r--r-- | source/blender/blenlib/intern/util.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/util.c b/source/blender/blenlib/intern/util.c index d6f76fb9259..d0f58a50eb9 100644 --- a/source/blender/blenlib/intern/util.c +++ b/source/blender/blenlib/intern/util.c @@ -220,6 +220,79 @@ void BLI_newname(char *name, int add) BLI_stringenc(name, head, tail, digits, pic); } +/* little helper macro for BLI_uniquename */ +#ifndef GIVE_STRADDR + #define GIVE_STRADDR(data, offset) ( ((char *)data) + offset ) +#endif + +/* Generic function to set a unique name. It is only designed to be used in situations + * where the name is part of the struct, and also that the name is at most 128 chars long. + * + * For places where this is used, see constraint.c for example... + * + * name_offs: should be calculated using offsetof(structname, membername) macro from stddef.h + * len: maximum length of string (to prevent overflows, etc.) + * defname: the name that should be used by default if none is specified already + */ +void BLI_uniquename(ListBase *list, void *vlink, char defname[], short name_offs, short len) +{ + Link *link; + char tempname[128]; + int number = 1, exists = 0; + char *dot; + + /* Make sure length can be handled */ + if ((len < 0) || (len > 128)) + return; + + /* See if we are given an empty string */ + if (ELEM(NULL, vlink, defname)) + return; + + if (GIVE_STRADDR(vlink, name_offs) == '\0') { + /* give it default name first */ + BLI_strncpy(GIVE_STRADDR(vlink, name_offs), defname, len); + } + + /* See if we even need to do this */ + if (list == NULL) + return; + + for (link = list->first; link; link= link->next) { + if (link != vlink) { + if (!strcmp(GIVE_STRADDR(link, name_offs), GIVE_STRADDR(vlink, name_offs))) { + exists = 1; + break; + } + } + } + if (exists == 0) + return; + + /* Strip off the suffix */ + dot = strchr(GIVE_STRADDR(vlink, name_offs), '.'); + if (dot) + *dot=0; + + for (number = 1; number <= 999; number++) { + BLI_snprintf(tempname, 128, "%s.%03d", GIVE_STRADDR(vlink, name_offs), number); + + exists = 0; + for (link= list->first; link; link= link->next) { + if (vlink != link) { + if (!strcmp(GIVE_STRADDR(link, name_offs), tempname)) { + exists = 1; + break; + } + } + } + if (exists == 0) { + BLI_strncpy(GIVE_STRADDR(vlink, name_offs), tempname, len); + return; + } + } +} + void BLI_addhead(ListBase *listbase, void *vlink) { |