added leader command

1 files changed, 18 insertions, 2 deletions

diff --git a/badroff.c b/badroff.c
index 123deba..c28e153 100644
--- a/badroff.c
+++ b/badroff.c
@@ -86,9 +86,25 @@ char* fillline(char* txt){
     memset(str, txt[0], width);
     return str;
 }
+char* leader(char* txt){
+    char* cnxt;
+    char* start = strtok_r(txt, "|", &cnxt);
+    char* repeat = strtok_r(NULL, "|", &cnxt);
+    char* end = strtok_r(NULL, "|", &cnxt);
+    char* fin = malloc(sizeof(char)*(width+2));
+    fin[width] = '\n'; fin[width+1] = 0;
+    strcpy(fin, start);
+    size_t max = width-strlen(end); size_t rptln = strlen(repeat);
+    strcpy(fin+max, end);
+    for (int i=strlen(start); i<width-strlen(end); i++)
+        fin[i] = repeat[i % rptln];
+    return fin;
+}
 
-char* cmds[] = {"CT ", "FIL ", "W "}; // MUST be sorted alphabetically
-char* (*call[])(char* txt) = {center, fillline, setwidth};
+char* cmds[] =
+    {"CT ", "FIL ", "LD ", "W "}; // MUST be sorted alphabetically
+char* (*call[])(char* txt) =
+    {center, fillline, leader, setwidth};
 
 char* cmd(void){
     char* dat = popstrbuf(inbuf, chrfill('\n'));