added dynamic patch

1 files changed, 62 insertions, 6 deletions

diff --git a/dmenu.c b/dmenu.c
index e940e57..3dfbeb8 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -62,6 +62,7 @@ static struct item *items = NULL;
 static struct item *matches, *matchend;
 static struct item *prev, *curr, *next, *sel;
 static int mon = -1, screen;
+static unsigned int max_lines = 0;
 
 static Atom clip, utf8;
 static Display *dpy;
@@ -302,6 +303,45 @@ static void grabkeyboard(void) {
   die("cannot grab keyboard");
 }
 
+static void readstdin(FILE *stream);
+
+static void refreshoptions() {
+  int dynlen = strlen(dynamic);
+  int cmdlen = dynlen + 4;
+  char *cmd;
+  char *c;
+  char *t = text;
+  while (*t)
+    cmdlen += *t++ == '\'' ? 4 : 1;
+  cmd = malloc(cmdlen);
+  if (cmd == NULL)
+    die("cannot malloc %u bytes:", cmdlen);
+  strcpy(cmd, dynamic);
+  t = text;
+  c = cmd + dynlen;
+  *(c++) = ' ';
+  *(c++) = '\'';
+  while (*t) {
+    // prefix ' with '\'
+    if (*t == '\'') {
+      *(c++) = '\'';
+      *(c++) = '\\';
+      *(c++) = '\'';
+    }
+    *(c++) = *(t++);
+  }
+  *(c++) = '\'';
+  *(c++) = 0;
+  FILE *stream = popen(cmd, "r");
+  if (!stream)
+    die("could not popen dynamic command (%s):", cmd);
+  readstdin(stream);
+  int r = pclose(stream);
+  if (r == -1)
+    die("could not pclose dynamic command");
+  free(cmd);
+}
+
 int compare_distance(const void *a, const void *b) {
   struct item *da = *(struct item **)a;
   struct item *db = *(struct item **)b;
@@ -398,6 +438,16 @@ static void match(void) {
   size_t len, textsize;
   struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
 
+  if (dynamic) {
+    refreshoptions();
+    matches = matchend = NULL;
+    for (item = items; item && item->text; item++)
+      appenditem(item, &matches, &matchend);
+    curr = sel = matches;
+    calcoffsets();
+    return;
+  }
+
   strcpy(buf, text);
   /* separate input text into tokens to be matched individually */
   for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
@@ -777,13 +827,13 @@ static void paste(void) {
   drawmenu();
 }
 
-static void readstdin(void) {
+static void readstdin(FILE *stream) {
   char buf[sizeof text], *p;
   size_t i, imax = 0, size = 0;
   unsigned int tmpmax = 0;
 
   /* read each line from stdin and add it to the item list */
-  for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
+  for (i = 0; fgets(buf, sizeof buf, stream); i++) {
     if (i + 1 >= size / sizeof *items)
       if (!(items = realloc(items, (size += BUFSIZ))))
         die("cannot realloc %u bytes:", size);
@@ -814,7 +864,7 @@ static void readstdin(void) {
   if (items)
     items[i].text = NULL;
   inputw = items ? TEXTW(items[imax].text) : 0;
-  lines = MIN(lines, i);
+  lines = MIN(max_lines, i);
 }
 
 void resource_load(XrmDatabase db, char *name, enum resource_type rtype,
@@ -1009,7 +1059,8 @@ static void usage(void) {
   fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
         "             [-nb color] [-nf color] [-sb color] [-sf color]\n"
         "             [-nhb color] [-nhf color] [-shb color] [-shf color]\n"
-        "             [-d separator] [-D separator] [-w windowid]\n",
+        "             [-d separator] [-D separator] [-dy command] [-w "
+        "windowid]\n",
         stderr);
   exit(1);
 }
@@ -1074,6 +1125,8 @@ int main(int argc, char *argv[]) {
       separator_reverse = argv[i][1] == '|';
     } else if (!strcmp(argv[i], "-w")) /* embedding window id */
       embed = argv[++i];
+    else if (!strcmp(argv[i], "-dy")) /* dynamic command to run */
+      dynamic = argv[++i] && *argv[i] ? argv[i] : NULL;
     else
       usage();
 
@@ -1097,11 +1150,14 @@ int main(int argc, char *argv[]) {
     die("pledge");
 #endif
 
+  max_lines = lines;
   if (fast && !isatty(0)) {
     grabkeyboard();
-    readstdin();
+    if (!dynamic)
+      readstdin(stdin);
   } else {
-    readstdin();
+    if (!dynamic)
+      readstdin(stdin);
     grabkeyboard();
   }
   setup();