fast dmenu_path script
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9dbbebaf1e
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@ -3,7 +3,7 @@
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include config.mk
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include config.mk
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all: options dmenu dmenu_path
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all: options dmenu
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options:
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options:
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@echo dmenu build options:
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@echo dmenu build options:
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@ -15,22 +15,18 @@ dmenu: dmenu.o draw.o
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@echo CC -o $@
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@echo CC -o $@
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@${CC} -o $@ dmenu.o draw.o ${LDFLAGS}
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@${CC} -o $@ dmenu.o draw.o ${LDFLAGS}
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dmenu_path: dmenu_path.o
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@echo CC -o $@
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@${CC} -o $@ dmenu_path.o ${LDFLAGS}
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.c.o: config.mk
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.c.o: config.mk
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@echo CC -c $<
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@echo CC -c $<
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@${CC} -c $< ${CFLAGS}
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@${CC} -c $< ${CFLAGS}
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clean:
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clean:
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@echo cleaning
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@echo cleaning
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@rm -f dmenu dmenu.o draw.o dmenu_path dmenu_path.o dmenu-${VERSION}.tar.gz
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@rm -f dmenu dmenu.o draw.o dmenu-${VERSION}.tar.gz
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dist: clean
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dist: clean
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@echo creating dist tarball
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@echo creating dist tarball
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@mkdir -p dmenu-${VERSION}
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@mkdir -p dmenu-${VERSION}
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@cp LICENSE Makefile README config.mk dmenu.1 dmenu.c draw.c draw.h dmenu_path.c dmenu_run dmenu-${VERSION}
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@cp LICENSE Makefile README config.mk dmenu.1 dmenu.c draw.c draw.h dmenu_path dmenu_run dmenu-${VERSION}
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@tar -cf dmenu-${VERSION}.tar dmenu-${VERSION}
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@tar -cf dmenu-${VERSION}.tar dmenu-${VERSION}
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@gzip dmenu-${VERSION}.tar
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@gzip dmenu-${VERSION}.tar
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@rm -rf dmenu-${VERSION}
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@rm -rf dmenu-${VERSION}
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@ -42,7 +42,7 @@ is a dmenu script used by dwm which lists programs in the user's PATH and
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executes the selected item.
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executes the selected item.
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.P
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.P
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.B dmenu_path
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.B dmenu_path
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is a program used by dmenu_run to find and cache a list of executables.
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is a script used by dmenu_run to find and cache a list of executables.
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.SH OPTIONS
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.SH OPTIONS
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.TP
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.TP
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.B \-b
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.B \-b
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9
dmenubar/dmenu_path
Executable file
9
dmenubar/dmenu_path
Executable file
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@ -0,0 +1,9 @@
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#!/bin/sh
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CACHE=$HOME/.dmenu_cache
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IFS=:
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if ! test -f "$CACHE" || find $PATH -type d -newer "$CACHE" | grep -q .; then
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find $PATH -type f \( -perm -1 -o -perm -10 -o -perm -100 \) | sort -u > "$CACHE"
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fi
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cat "$CACHE"
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@ -1,100 +0,0 @@
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/* See LICENSE file for copyright and license details. */
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#include <dirent.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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static void die(const char *s);
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static int qstrcmp(const void *a, const void *b);
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static void scan(void);
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static int uptodate(void);
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static char **items = NULL;
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static const char *home, *path;
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int
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main(void) {
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if(!(home = getenv("HOME")))
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die("no $HOME");
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if(!(path = getenv("PATH")))
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die("no $PATH");
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if(chdir(home) < 0)
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die("chdir failed");
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if(uptodate()) {
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execl("/bin/cat", "cat", CACHE, NULL);
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die("exec failed");
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}
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scan();
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return EXIT_SUCCESS;
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}
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void
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die(const char *s) {
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fprintf(stderr, "dmenu_path: %s\n", s);
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exit(EXIT_FAILURE);
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}
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int
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qstrcmp(const void *a, const void *b) {
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return strcmp(*(const char **)a, *(const char **)b);
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}
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void
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scan(void) {
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char buf[PATH_MAX];
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char *dir, *p;
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size_t i, count;
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struct dirent *ent;
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DIR *dp;
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FILE *cache;
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count = 0;
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if(!(p = strdup(path)))
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die("strdup failed");
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for(dir = strtok(p, ":"); dir; dir = strtok(NULL, ":")) {
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if(!(dp = opendir(dir)))
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continue;
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while((ent = readdir(dp))) {
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snprintf(buf, sizeof buf, "%s/%s", dir, ent->d_name);
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if(ent->d_name[0] == '.' || access(buf, X_OK) < 0)
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continue;
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if(!(items = realloc(items, ++count * sizeof *items)))
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die("malloc failed");
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if(!(items[count-1] = strdup(ent->d_name)))
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die("strdup failed");
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}
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closedir(dp);
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}
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qsort(items, count, sizeof *items, qstrcmp);
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if(!(cache = fopen(CACHE, "w")))
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die("open failed");
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for(i = 0; i < count; i++) {
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if(i > 0 && !strcmp(items[i], items[i-1]))
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continue;
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fprintf(cache, "%s\n", items[i]);
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fprintf(stdout, "%s\n", items[i]);
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}
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fclose(cache);
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free(p);
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}
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int
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uptodate(void) {
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char *dir, *p;
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time_t mtime;
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struct stat st;
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if(stat(CACHE, &st) < 0)
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return 0;
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mtime = st.st_mtime;
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if(!(p = strdup(path)))
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die("strdup failed");
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for(dir = strtok(p, ":"); dir; dir = strtok(NULL, ":"))
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if(!stat(dir, &st) && st.st_mtime > mtime)
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return 0;
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free(p);
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return 1;
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}
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