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.Dd May 6, 2010 .Dt STRINGLIST 3 .Os .Sh NAME .Nm stringlist , .Nm sl_init , .Nm sl_add , .Nm sl_free , .Nm sl_find , .Nm sl_delete .Nd stringlist manipulation functions .Sh LIBRARY .Lb libc .Sh SYNOPSIS n stringlist.h .Ft StringList * .Fn sl_init .Ft int .Fn sl_add "StringList *sl" "char *item" .Ft void .Fn sl_free "StringList *sl" "int freeall" .Ft char * .Fn sl_find "StringList *sl" "const char *item" .Ft int .Fn sl_delete "StringList *sl" "const char *item" "int freeit" .Sh DESCRIPTION The .Nm functions manipulate stringlists, which are lists of strings that extend automatically if necessary.
p The .Ar StringList structure has the following definition: d -literal -offset indent typedef struct _stringlist { char **sl_str; size_t sl_max; size_t sl_cur; } StringList; .Ed
p where: l -tag -width "sl_str" -offset indent t Ar sl_str is a pointer to the base of the array containing the list, t Ar sl_max is the size of .Ar sl_str , and t Ar sl_cur is the offset in .Ar sl_str of the current element. .El
p The following stringlist manipulation functions are available: l -tag -width "sl_delete()" -offset 2n t Fn sl_init Create a stringlist. Returns a pointer to a .Ar StringList , or .Dv NULL in case of failure. t Fn sl_free Releases memory occupied by .Ar sl and the .Ar sl-\*[Gt]sl_str array. If .Ar freeall is non-zero, then each of the items within .Ar sl-\*[Gt]sl_str is released as well. t Fn sl_add Add .Ar item to .Ar sl-\*[Gt]sl_str at .Ar sl-\*[Gt]sl_cur , extending the size of .Ar sl-\*[Gt]sl_str . Returns zero upon success, -1 upon failure. t Fn sl_find Find .Ar item in .Ar sl , returning .Dv NULL if it's not found. t Fn sl_delete Remove .Ar item from the list. If .Ar freeit is non-zero, the string is freed. Returns .Dv 0 if the name is found and .Dv -1 if the name is not found. .El .Sh SEE ALSO .Xr free 3 , .Xr malloc 3 .Sh HISTORY The .Nm functions appeared in .Nx 1.3 .