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Add force-tty capability to spawn and set pagers to it (#1070) 

Co-authored-by: Anna Arad <annagram@shards.me>
This commit is contained in:
Anna Arad 2021-06-12 19:32:48 +02:00 committed by GitHub
parent 0dd76e7aec
commit 4f977ff269
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 14 deletions
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36
src/nnn.c
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@ -210,15 +210,16 @@
#define FILE_SELECTED 0x10
/* Macros to define process spawn behaviour as flags */
#define F_NONE 0x00 /* no flag set */
#define F_MULTI 0x01 /* first arg can be combination of args; to be used with F_NORMAL */
#define F_NOWAIT 0x02 /* don't wait for child process (e.g. file manager) */
#define F_NOTRACE 0x04 /* suppress stdout and stderr (no traces) */
#define F_NORMAL 0x08 /* spawn child process in non-curses regular CLI mode */
#define F_CONFIRM 0x10 /* run command - show results before exit (must have F_NORMAL) */
#define F_CHKRTN 0x20 /* wait for user prompt if cmd returns failure status */
#define F_NOSTDIN 0x40 /* suppress stdin */
#define F_PAGE 0x80 /* page output in run-cmd-as-plugin mode */
#define F_NONE 0x00 /* no flag set */
#define F_MULTI 0x01 /* first arg can be combination of args; to be used with F_NORMAL */
#define F_NOWAIT 0x02 /* don't wait for child process (e.g. file manager) */
#define F_NOTRACE 0x04 /* suppress stdout and stderr (no traces) */
#define F_NORMAL 0x08 /* spawn child process in non-curses regular CLI mode */
#define F_CONFIRM 0x10 /* run command - show results before exit (must have F_NORMAL) */
#define F_CHKRTN 0x20 /* wait for user prompt if cmd returns failure status */
#define F_NOSTDIN 0x40 /* suppress stdin */
#define F_PAGE 0x80 /* page output in run-cmd-as-plugin mode */
#define F_FORCE_TTY 0x100 /* Force stdout to go to tty if redirected to a non-tty */
#define F_CLI (F_NORMAL | F_MULTI)
#define F_SILENT (F_CLI | F_NOTRACE)
@ -800,7 +801,7 @@ static haiku_nm_h haiku_hnd;
/* Forward declarations */
static void redraw(char *path);
static int spawn(char *file, char *arg1, char *arg2, char *arg3, uchar_t flag);
static int spawn(char *file, char *arg1, char *arg2, char *arg3, ushort_t flag);
static void move_cursor(int target, int ignore_scrolloff);
static char *load_input(int fd, const char *path);
static int set_sort_flags(int r);
@ -2039,7 +2040,7 @@ static int join(pid_t p, uchar_t flag)
* Spawns a child process. Behaviour can be controlled using flag.
* Limited to 3 arguments to a program, flag works on bit set.
*/
static int spawn(char *file, char *arg1, char *arg2, char *arg3, uchar_t flag)
static int spawn(char *file, char *arg1, char *arg2, char *arg3, ushort_t flag)
{
pid_t pid;
int status = 0, retstatus = 0xFFFF;
@ -2084,6 +2085,13 @@ static int spawn(char *file, char *arg1, char *arg2, char *arg3, uchar_t flag)
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
close(fd);
} else if (flag & F_FORCE_TTY) {
/* If stdout has been redirected to a non-tty, force output to tty */
if (!isatty(STDOUT_FILENO)) {
int fd = open(ctermid(NULL), O_WRONLY, 0200);
dup2(fd, STDOUT_FILENO);
close(fd);
}
}
execvp(*argv, argv);
@ -4104,7 +4112,7 @@ static bool get_output(char *file, char *arg1, char *arg2, FILE *fout, bool mult
/* Show in pager in child */
dup2(pipefd[0], STDIN_FILENO);
close(pipefd[0]);
spawn(pager, NULL, NULL, NULL, F_CLI);
spawn(pager, NULL, NULL, NULL, F_CLI | F_FORCE_TTY);
_exit(EXIT_SUCCESS);
}
@ -4146,7 +4154,7 @@ static bool show_stats(char *fpath)
fclose(fp);
close(fd);
spawn(pager, g_tmpfpath, NULL, NULL, F_CLI);
spawn(pager, g_tmpfpath, NULL, NULL, F_CLI | F_FORCE_TTY);
unlink(g_tmpfpath);
return TRUE;
}
@ -4669,7 +4677,7 @@ static void show_help(const char *path)
fclose(fp);
close(fd);
spawn(pager, g_tmpfpath, NULL, NULL, F_CLI);
spawn(pager, g_tmpfpath, NULL, NULL, F_CLI | F_FORCE_TTY);
unlink(g_tmpfpath);
}