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Fix #89: User-specific tmp file for copying filenames

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Use distinct (by username) tmp filename to copy file paths.

The pattern used is:
/tmp/nnncp$USER

If username is 'arun', the file name is `/tmp/nnncparun`.
This commit is contained in:
Arun Prakash Jana 2018-03-04 10:37:18 +05:30
parent 43134cdfa8
commit 3036b8a733
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GPG key ID: A75979F35C080412
3 changed files with 16 additions and 11 deletions
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10
README.md
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@ -385,7 +385,7 @@ This is particularly useful if you are planning to copy the whole string to the
#### copy file paths when X is missing #### copy file paths when X is missing
A very common scenario on headless remote servers connected via SSH. As the clipboard is missing, `nnn` copies the path names to the tmp file `/tmp/nnncp`. A very common scenario on headless remote servers connected via SSH. As the clipboard is missing, `nnn` copies the path names to the tmp file `/tmp/nnncp$USER`.
`nnn` needs to know X is unavailable: `nnn` needs to know X is unavailable:
@ -394,15 +394,15 @@ A very common scenario on headless remote servers connected via SSH. As the clip
Use <kbd>^Y</kbd> and/or <kbd>^K</kbd> to copy file paths as usual. To use the copied paths from the cmdline, use command substitution: Use <kbd>^Y</kbd> and/or <kbd>^K</kbd> to copy file paths as usual. To use the copied paths from the cmdline, use command substitution:
# bash/zsh # bash/zsh
ls -ltr `cat /tmp/nnncp` ls -ltr `cat /tmp/nnncpuser`
ls -ltr $(cat /tmp/nnncp) ls -ltr $(cat /tmp/nnncpuser)
# fish # fish
ls -ltr (cat /tmp/nnncp) ls -ltr (cat /tmp/nnncpuser)
An alias may be handy: An alias may be handy:
alias ncp='cat /tmp/nnncp' alias ncp='cat /tmp/nnncpuser'
so you can - so you can -

2
nnn.1
View file

@ -248,7 +248,7 @@ screensaver.
------------------------------------- -------------------------------------
.Ed .Ed
.Pp .Pp
\fBNNN_NO_X:\fR X display is unavailable. Copy file path(s) to \fI/tmp/nnncp\fR. \fBNNN_NO_X:\fR X display is unavailable. Copy file path(s) to \fI/tmp/nnncp$USER\fR.
.Bd -literal .Bd -literal
export NNN_NO_X=1 export NNN_NO_X=1
.Ed .Ed

15
nnn.c
View file

@ -195,9 +195,6 @@ disabledbg()
#define NUM_EVENT_FDS 1 #define NUM_EVENT_FDS 1
#endif #endif
/* File path to copy file names when X is not available */
#define TMP_CP_PATH "/tmp/nnncp"
/* TYPE DEFINITIONS */ /* TYPE DEFINITIONS */
typedef unsigned long ulong; typedef unsigned long ulong;
typedef unsigned int uint; typedef unsigned int uint;
@ -317,6 +314,9 @@ static const char messages[][16] =
/* For use in functions which are isolated and don't return the buffer */ /* For use in functions which are isolated and don't return the buffer */
static char g_buf[MAX_CMD_LEN] __attribute__ ((aligned)); static char g_buf[MAX_CMD_LEN] __attribute__ ((aligned));
/* Buffer for file path copy file */
static char g_cppath[48] __attribute__ ((aligned));
/* Forward declarations */ /* Forward declarations */
static void redraw(char *path); static void redraw(char *path);
@ -635,7 +635,7 @@ xbasename(char *path)
static void static void
writecp(const char *buf, const size_t buflen) writecp(const char *buf, const size_t buflen)
{ {
FILE *fp = fopen(TMP_CP_PATH, "w"); FILE *fp = fopen(g_cppath, "w");
if (fp) { if (fp) {
fwrite(buf, 1, buflen, fp); fwrite(buf, 1, buflen, fp);
@ -3318,9 +3318,14 @@ main(int argc, char *argv[])
cfg.quote = 1; cfg.quote = 1;
/* Check if X11 is available */ /* Check if X11 is available */
if (getenv("NNN_NO_X")) if (getenv("NNN_NO_X")) {
cfg.noxdisplay = 1; cfg.noxdisplay = 1;
struct passwd *pass = getpwuid(getuid());
xstrlcpy(g_cppath, "/tmp/nnncp", 11);
xstrlcpy(g_cppath + 10, pass->pw_name, 33);
}
signal(SIGINT, SIG_IGN); signal(SIGINT, SIG_IGN);
/* Test initial path */ /* Test initial path */