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nnn/patches/restorepreview/mainline.diff
me 3d2caf861d Setting PWD: set on use case, not on browse 
This moves setting PWD environment variable closer to the places where child process (that needs PWD correctly set) is started instead of start it on browse.
2023-12-14 11:03:38 +03:00

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# Description: Adds preview pipe to enable closing and re-opening the preview
# pane when running an undetached editor. If you are using vim
# you might experience incorrectly resized window. Consider adding
# the following to your vimrc:
# autocmd VimEnter * :silent exec "!kill -s WINCH $PPID"
#
# Authors: Luuk van Baal
diff --git a/src/nnn.c b/src/nnn.c
index 0388b23c..66d3316a 100644
--- a/src/nnn.c
+++ b/src/nnn.c
@@ -390,7 +390,8 @@ typedef struct {
uint_t uidgid : 1; /* Show owner and group info */
uint_t usebsdtar : 1; /* Use bsdtar as default archive utility */
uint_t xprompt : 1; /* Use native prompt instead of readline prompt */
- uint_t reserved : 4; /* Adjust when adding/removing a field */
+ uint_t previewer : 1; /* Run state of previewer */
+ uint_t reserved : 3; /* Adjust when adding/removing a field */
} runstate;
/* Contexts or workspaces */
@@ -516,6 +517,9 @@ alignas(max_align_t) static char g_tmpfpath[TMP_LEN_MAX];
/* Buffer to store plugins control pipe location */
alignas(max_align_t) static char g_pipepath[TMP_LEN_MAX];
+/* Buffer to store preview plugins control pipe location */
+static char g_ppipepath[TMP_LEN_MAX] __attribute__ ((aligned));
+
/* Non-persistent runtime states */
static runstate g_state;
@@ -696,12 +700,13 @@ static const char * const messages[] = {
#define NNN_FCOLORS 5
#define NNNLVL 6
#define NNN_PIPE 7
-#define NNN_MCLICK 8
-#define NNN_SEL 9
-#define NNN_ARCHIVE 10
-#define NNN_ORDER 11
-#define NNN_HELP 12 /* strings end here */
-#define NNN_TRASH 13 /* flags begin here */
+#define NNN_PPIPE 8
+#define NNN_MCLICK 9
+#define NNN_SEL 10
+#define NNN_ARCHIVE 11
+#define NNN_ORDER 12
+#define NNN_HELP 13 /* strings end here */
+#define NNN_TRASH 14 /* flags begin here */
static const char * const env_cfg[] = {
"NNN_OPTS",
@@ -712,6 +717,7 @@ static const char * const env_cfg[] = {
"NNN_FCOLORS",
"NNNLVL",
"NNN_PIPE",
+ "NNN_PPIPE",
"NNN_MCLICK",
"NNN_SEL",
"NNN_ARCHIVE",
@@ -850,7 +856,7 @@ static int set_sort_flags(int r);
static void statusbar(char *path);
static bool get_output(char *file, char *arg1, char *arg2, int fdout, bool page);
#ifndef NOFIFO
-static void notify_fifo(bool force);
+static void notify_fifo(bool force, bool closepreview);
#endif
/* Functions */
@@ -3140,7 +3146,7 @@ try_quit:
} else {
#ifndef NOFIFO
if (!g_state.fifomode)
- notify_fifo(TRUE); /* Send hovered path to NNN_FIFO */
+ notify_fifo(TRUE, FALSE); /* Send hovered path to NNN_FIFO */
#endif
escaped = TRUE;
settimeout();
@@ -5258,15 +5264,20 @@ static void run_cmd_as_plugin(const char *file, uchar_t flags)
static bool plctrl_init(void)
{
- size_t len;
+ size_t len, lenbuf;
+ pid_t pid = getpid();
/* g_tmpfpath is used to generate tmp file names */
g_tmpfpath[tmpfplen - 1] = '\0';
- len = xstrsncpy(g_pipepath, g_tmpfpath, TMP_LEN_MAX);
+ len = lenbuf = xstrsncpy(g_pipepath, g_tmpfpath, TMP_LEN_MAX);
g_pipepath[len - 1] = '/';
- len = xstrsncpy(g_pipepath + len, "nnn-pipe.", TMP_LEN_MAX - len) + len;
- xstrsncpy(g_pipepath + len - 1, xitoa(getpid()), TMP_LEN_MAX - len);
+ xstrsncpy(g_ppipepath, g_pipepath, TMP_LEN_MAX);
+ len += xstrsncpy(g_pipepath + len, "nnn-pipe.", TMP_LEN_MAX - len);
+ xstrsncpy(g_pipepath + len - 1, xitoa(pid), TMP_LEN_MAX - len);
+ len = xstrsncpy(g_ppipepath + lenbuf, "nnn-ppipe.", TMP_LEN_MAX - lenbuf) + lenbuf;
+ xstrsncpy(g_ppipepath + len - 1, xitoa(pid), TMP_LEN_MAX - len);
setenv(env_cfg[NNN_PIPE], g_pipepath, TRUE);
+ setenv(env_cfg[NNN_PPIPE], g_ppipepath, TRUE);
return EXIT_SUCCESS;
}
@@ -5295,6 +5306,21 @@ static ssize_t read_nointr(int fd, void *buf, size_t count)
return len;
}
+void *previewpipe(void *arg __attribute__ ((unused)))
+{
+ int fd, buf;
+
+ mkfifo(g_ppipepath, 0600);
+ fd = open(g_ppipepath, O_RDONLY);
+
+ if (read(fd, &buf, 1) == 1)
+ g_state.previewer = buf;
+
+ close(fd);
+ unlink(g_ppipepath);
+ return NULL;
+}
+
static char *readpipe(int fd, char *ctxnum, char **path)
{
char ctx, *nextpath = NULL;
@@ -5979,7 +6005,7 @@ static void populate(char *path, char *lastname)
}
#ifndef NOFIFO
-static void notify_fifo(bool force)
+static void notify_fifo(bool force, bool closepreview)
{
if (!fifopath)
return;
@@ -5995,6 +6021,12 @@ static void notify_fifo(bool force)
}
}
+ if (closepreview) {
+ if (write(fifofd, "close\n", 6) != 6)
+ xerror();
+ return;
+ }
+
static struct entry lastentry;
if (!force && !memcmp(&lastentry, &pdents[cur], sizeof(struct entry))) // NOLINT
@@ -6027,7 +6059,7 @@ static void send_to_explorer(int *presel)
if (fd > 1)
close(fd);
} else
- notify_fifo(TRUE); /* Send opened path to NNN_FIFO */
+ notify_fifo(TRUE, FALSE); /* Send opened path to NNN_FIFO */
}
#endif
@@ -6060,7 +6092,7 @@ static void move_cursor(int target, int ignore_scrolloff)
#ifndef NOFIFO
if (!g_state.fifomode)
- notify_fifo(FALSE); /* Send hovered path to NNN_FIFO */
+ notify_fifo(FALSE, FALSE); /* Send hovered path to NNN_FIFO */
#endif
}
@@ -6733,7 +6765,7 @@ static bool browse(char *ipath, const char *session, int pkey)
pEntry pent;
enum action sel;
struct stat sb;
- int r = -1, presel, selstartid = 0, selendid = 0;
+ int r = -1, presel, selstartid = 0, selendid = 0, previewkey = 0;
const uchar_t opener_flags = (cfg.cliopener ? F_CLI : (F_NOTRACE | F_NOSTDIN | F_NOWAIT));
bool watch = FALSE, cd = TRUE;
ino_t inode = 0;
@@ -6991,7 +7023,7 @@ nochange:
move_cursor(r, 1);
#ifndef NOFIFO
else if ((event.bstate == BUTTON1_PRESSED) && !g_state.fifomode)
- notify_fifo(TRUE); /* Send clicked path to NNN_FIFO */
+ notify_fifo(TRUE, FALSE); /* Send clicked path to NNN_FIFO */
#endif
/* Handle right click selection */
if (event.bstate == BUTTON3_PRESSED) {
@@ -7153,7 +7185,14 @@ nochange:
&& strstr(g_buf, "text")
#endif
) {
+ if (g_state.previewer)
+ notify_fifo(FALSE, TRUE);
spawn(editor, newpath, NULL, NULL, F_CLI);
+ if (g_state.previewer) {
+ pkey = previewkey;
+ goto run_plugin;
+ }
+
if (cfg.filtermode) {
presel = FILTER;
clearfilter();
@@ -7471,8 +7510,14 @@ nochange:
copycurname();
goto nochange;
case SEL_EDIT:
+ if (g_state.previewer)
+ notify_fifo(FALSE, TRUE);
if (!(g_state.picker || g_state.fifomode))
spawn(editor, newpath, NULL, NULL, F_CLI);
+ if (g_state.previewer) {
+ pkey = previewkey;
+ goto run_plugin;
+ }
continue;
default: /* SEL_LOCK */
lock_terminal();
@@ -7860,6 +7905,7 @@ nochange:
cd = FALSE;
goto begin;
}
+run_plugin:
case SEL_PLUGIN:
/* Check if directory is accessible */
if (!xdiraccess(plgpath)) {
@@ -7885,6 +7931,12 @@ nochange:
goto nochange;
}
+ if (xstrcmp(tmp, "preview-tui") == 0) {
+ previewkey = r;
+ pthread_t tid;
+ pthread_create(&tid, NULL, previewpipe, NULL);
+ }
+
if (tmp[0] == '-' && tmp[1]) {
++tmp;
r = FALSE; /* Do not refresh dir after completion */
@@ -7943,7 +7995,13 @@ nochange:
case SEL_SHELL: // fallthrough
case SEL_LAUNCH: // fallthrough
case SEL_PROMPT:
+ if (g_state.previewer)
+ notify_fifo(FALSE, TRUE);
r = handle_cmd(sel, path, newpath);
+ if (g_state.previewer) {
+ pkey = previewkey;
+ goto run_plugin;
+ }
/* Continue in type-to-nav mode, if enabled */
if (cfg.filtermode)
@@ -8492,8 +8550,10 @@ static void cleanup(void)
if (g_state.autofifo)
unlink(fifopath);
#endif
- if (g_state.pluginit)
+ if (g_state.pluginit){
unlink(g_pipepath);
+ unlink(g_ppipepath);
+ }
#ifdef DEBUG
disabledbg();
#endif
@@ -9020,7 +9080,7 @@ int main(int argc, char *argv[])
#ifndef NOFIFO
if (!g_state.fifomode)
- notify_fifo(FALSE);
+ notify_fifo(FALSE, TRUE);
if (fifofd != -1)
close(fifofd);
#endif
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