[thirdparty/git.git] / pager.c

#include "cache.h"

/*
 * This is split up from the rest of git so that we might do
 * something different on Windows, for example.
 */

static void run_pager(void)
{
	const char *prog = getenv("PAGER");
	if (!prog)
		prog = "less";
	setenv("LESS", "-S", 0);
	execlp(prog, prog, NULL);
}

void setup_pager(void)
{
	pid_t pid;
	int fd[2];

	if (!isatty(1))
		return;
	if (pipe(fd) < 0)
		return;
	pid = fork();
	if (pid < 0) {
		close(fd[0]);
		close(fd[1]);
		return;
	}

	/* return in the child */
	if (!pid) {
		dup2(fd[1], 1);
		close(fd[0]);
		close(fd[1]);
		return;
	}

	/* The original process turns into the PAGER */
	dup2(fd[0], 0);
	close(fd[0]);
	close(fd[1]);

	run_pager();
	exit(255);
}
Commit	Line	Data
f67b45f8 LT	1	#include "cache.h"
	2
	3	/*
	4	* This is split up from the rest of git so that we might do
	5	* something different on Windows, for example.
	6	*/
	7
	8	static void run_pager(void)
	9	{
	10	const char *prog = getenv("PAGER");
	11	if (!prog)
	12	prog = "less";
	13	setenv("LESS", "-S", 0);
	14	execlp(prog, prog, NULL);
	15	}
	16
	17	void setup_pager(void)
	18	{
	19	pid_t pid;
	20	int fd[2];
	21
	22	if (!isatty(1))
	23	return;
	24	if (pipe(fd) < 0)
	25	return;
	26	pid = fork();
	27	if (pid < 0) {
	28	close(fd[0]);
	29	close(fd[1]);
	30	return;
	31	}
	32
	33	/* return in the child */
	34	if (!pid) {
	35	dup2(fd[1], 1);
	36	close(fd[0]);
	37	close(fd[1]);
	38	return;
	39	}
	40
	41	/* The original process turns into the PAGER */
	42	dup2(fd[0], 0);
	43	close(fd[0]);
	44	close(fd[1]);
	45
	46	run_pager();
	47	exit(255);
	48	}