sites

dmenu-navhistory+search-20200709.diff (6371B)

---

 diff --git a/config.def.h b/config.def.h
 index 1edb647..e3e1b53 100644
 --- a/config.def.h
 +++ b/config.def.h
 @@ -15,6 +15,8 @@ static const char *colors[SchemeLast][2] = {
  };
  /* -l option; if nonzero, dmenu uses vertical list with given number of lines */
  static unsigned int lines      = 0;
 +static unsigned int maxhist    = 64;
 +static int histnodup           = 1;	/* if 0, record repeated histories */
 
  /*
   * Characters not considered part of a word while deleting words
 diff --git a/dmenu.1 b/dmenu.1
 index 323f93c..ff496dd 100644
 --- a/dmenu.1
 +++ b/dmenu.1
 @@ -22,6 +22,8 @@ dmenu \- dynamic menu
  .IR color ]
  .RB [ \-w
  .IR windowid ]
 +.RB [ \-H
 +.IR histfile ]
  .P
  .BR dmenu_run " ..."
  .SH DESCRIPTION
 @@ -80,6 +82,9 @@ prints version information to stdout, then exits.
  .TP
  .BI \-w " windowid"
  embed into windowid.
 +.TP
 +.BI \-H " histfile"
 +save input in histfile and use it for history navigation.
  .SH USAGE
  dmenu is completely controlled by the keyboard.  Items are selected using the
  arrow keys, page up, page down, home, and end.
 diff --git a/dmenu.c b/dmenu.c
 index 65f25ce..4242eb4 100644
 --- a/dmenu.c
 +++ b/dmenu.c
 @@ -40,7 +40,7 @@ static int bh, mw, mh;
  static int inputw = 0, promptw;
  static int lrpad; /* sum of left and right padding */
  static size_t cursor;
 -static struct item *items = NULL;
 +static struct item *items = NULL, *backup_items;
  static struct item *matches, *matchend;
  static struct item *prev, *curr, *next, *sel;
  static int mon = -1, screen;
 @@ -53,6 +53,10 @@ static XIC xic;
  static Drw *drw;
  static Clr *scheme[SchemeLast];
 
 +static char *histfile;
 +static char **history;
 +static size_t histsz, histpos;
 +
  #include "config.h"
 
  static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
 @@ -304,11 +308,134 @@ movewordedge(int dir)
  	}
  }
 
 +static void
 +loadhistory(void)
 +{
 +	FILE *fp = NULL;
 +	static size_t cap = 0;
 +	size_t llen;
 +	char *line;
 +
 +	if (!histfile) {
 +		return;
 +	}
 +
 +	fp = fopen(histfile, "r");
 +	if (!fp) {
 +		return;
 +	}
 +
 +	for (;;) {
 +		line = NULL;
 +		llen = 0;
 +		if (-1 == getline(&line, &llen, fp)) {
 +			if (ferror(fp)) {
 +				die("failed to read history");
 +			}
 +			free(line);
 +			break;
 +		}
 +
 +		if (cap == histsz) {
 +			cap += 64 * sizeof(char*);
 +			history = realloc(history, cap);
 +			if (!history) {
 +				die("failed to realloc memory");
 +			}
 +		}
 +		strtok(line, "\n");
 +		history[histsz] = line;
 +		histsz++;
 +	}
 +	histpos = histsz;
 +
 +	if (fclose(fp)) {
 +		die("failed to close file %s", histfile);
 +	}
 +}
 +
 +static void
 +navhistory(int dir)
 +{
 +	static char def[BUFSIZ];
 +	char *p = NULL;
 +	size_t len = 0;
 +
 +	if (!history || histpos + 1 == 0)
 +		return;
 +
 +	if (histsz == histpos) {
 +		strncpy(def, text, sizeof(def));
 +	}
 +
 +	switch(dir) {
 +	case 1:
 +		if (histpos < histsz - 1) {
 +			p = history[++histpos];
 +		} else if (histpos == histsz - 1) {
 +			p = def;
 +			histpos++;
 +		}
 +		break;
 +	case -1:
 +		if (histpos > 0) {
 +			p = history[--histpos];
 +		}
 +		break;
 +	}
 +	if (p == NULL) {
 +		return;
 +	}
 +
 +	len = MIN(strlen(p), BUFSIZ - 1);
 +	strncpy(text, p, len);
 +	text[len] = '\0';
 +	cursor = len;
 +	match();
 +}
 +
 +static void
 +savehistory(char *input)
 +{
 +	unsigned int i;
 +	FILE *fp;
 +
 +	if (!histfile ||
 +	    0 == maxhist ||
 +	    0 == strlen(input)) {
 +		goto out;
 +	}
 +
 +	fp = fopen(histfile, "w");
 +	if (!fp) {
 +		die("failed to open %s", histfile);
 +	}
 +	for (i = histsz < maxhist ? 0 : histsz - maxhist; i < histsz; i++) {
 +		if (0 >= fprintf(fp, "%s\n", history[i])) {
 +			die("failed to write to %s", histfile);
 +		}
 +	}
 +	if (!histnodup || (histsz > 0 && strcmp(input, history[histsz-1]) != 0)) { /* TODO */
 +		if (0 >= fputs(input, fp)) {
 +			die("failed to write to %s", histfile);
 +		}
 +	}
 +	if (fclose(fp)) {
 +		die("failed to close file %s", histfile);
 +	}
 +
 +out:
 +	for (i = 0; i < histsz; i++) {
 +		free(history[i]);
 +	}
 +	free(history);
 +}
 +
  static void
  keypress(XKeyEvent *ev)
  {
  	char buf[32];
 -	int len;
 +	int len, i;
  	KeySym ksym;
  	Status status;
 
 @@ -359,6 +486,26 @@ keypress(XKeyEvent *ev)
  			XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
  			                  utf8, utf8, win, CurrentTime);
  			return;
 +		case XK_r:
 +			if (histfile) {
 +				if (!backup_items) {
 +					backup_items = items;
 +					items = calloc(histsz + 1, sizeof(struct item));
 +					if (!items) {
 +						die("cannot allocate memory");
 +					}
 +
 +					for (i = 0; i < histsz; i++) {
 +						items[i].text = history[i];
 +					}
 +				} else {
 +					free(items);
 +					items = backup_items;
 +					backup_items = NULL;
 +				}
 +			}
 +			match();
 +			goto draw;
  		case XK_Left:
  			movewordedge(-1);
  			goto draw;
 @@ -388,6 +535,14 @@ keypress(XKeyEvent *ev)
  		case XK_j: ksym = XK_Next;  break;
  		case XK_k: ksym = XK_Prior; break;
  		case XK_l: ksym = XK_Down;  break;
 +		case XK_p:
 +			navhistory(-1);
 +			buf[0]=0;
 +			break;
 +		case XK_n:
 +			navhistory(1);
 +			buf[0]=0;
 +			break;
  		default:
  			return;
  		}
 @@ -466,6 +621,8 @@ insert:
  	case XK_KP_Enter:
  		puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
  		if (!(ev->state & ControlMask)) {
 +			savehistory((sel && !(ev->state & ShiftMask))
 +				    ? sel->text : text);
  			cleanup();
  			exit(0);
  		}
 @@ -690,7 +847,8 @@ 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] [-w windowid]\n", stderr);
 +	      "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n"
 +	      "             [-H histfile]", stderr);
  	exit(1);
  }
 
 @@ -715,6 +873,8 @@ main(int argc, char *argv[])
  		} else if (i + 1 == argc)
  			usage();
  		/* these options take one argument */
 +		else if (!strcmp(argv[i], "-H"))
 +			histfile = argv[++i];
  		else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
  			lines = atoi(argv[++i]);
  		else if (!strcmp(argv[i], "-m"))
 @@ -757,6 +917,8 @@ main(int argc, char *argv[])
  		die("pledge");
  #endif
 
 +	loadhistory();
 +
  	if (fast && !isatty(0)) {
  		grabkeyboard();
  		readstdin();
 diff --git a/dmenu_run b/dmenu_run
 index 834ede5..59ec622 100755
 --- a/dmenu_run
 +++ b/dmenu_run
 @@ -1,2 +1,2 @@
  #!/bin/sh
 -dmenu_path | dmenu "$@" | ${SHELL:-"/bin/sh"} &
 +dmenu_path | dmenu -H "${XDG_CACHE_HOME:-$HOME/.cache/}/dmenu_run.hist" "$@" | ${SHELL:-"/bin/sh"} &