X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;ds=inline;f=pager.c;h=6b5c9e44b4ded338ddb344ae454d83a685b7569a;hb=6e1c23442a0315ad440bb8457703dcf1ad943b96;hp=fb7a1a625abf07b0d896a270286ee422a700c14c;hpb=9bbe6db85f368fc4f75cc9f6c4bfaf2269bf0068;p=git.git

diff --git a/pager.c b/pager.c
index fb7a1a625..6b5c9e44b 100644
--- a/pager.c
+++ b/pager.c
@@ -1,10 +1,13 @@
 #include "cache.h"
 
 /*
- * This is split up from the rest of git so that we might do
- * something different on Windows, for example.
+ * This is split up from the rest of git so that we can do
+ * something different on Windows.
  */
 
+static int spawned_pager;
+
+#ifndef __MINGW32__
 static void run_pager(const char *pager)
 {
 	/*
@@ -20,18 +23,38 @@ static void run_pager(const char *pager)
 	execlp(pager, pager, NULL);
 	execl("/bin/sh", "sh", "-c", pager, NULL);
 }
+#else
+#include "run-command.h"
+
+static const char *pager_argv[] = { "sh", "-c", NULL, NULL };
+static struct child_process pager_process = {
+	.argv = pager_argv,
+	.in = -1
+};
+static void wait_for_pager(void)
+{
+	fflush(stdout);
+	fflush(stderr);
+	/* signal EOF to pager */
+	close(1);
+	close(2);
+	finish_command(&pager_process);
+}
+#endif
 
 void setup_pager(void)
 {
+#ifndef __MINGW32__
 	pid_t pid;
 	int fd[2];
+#endif
 	const char *pager = getenv("GIT_PAGER");
 
 	if (!isatty(1))
 		return;
 	if (!pager) {
 		if (!pager_program)
-			git_config(git_default_config);
+			git_config(git_default_config, NULL);
 		pager = pager_program;
 	}
 	if (!pager)
@@ -41,8 +64,9 @@ void setup_pager(void)
 	else if (!*pager || !strcmp(pager, "cat"))
 		return;
 
-	pager_in_use = 1; /* means we are emitting to terminal */
+	spawned_pager = 1; /* means we are emitting to terminal */
 
+#ifndef __MINGW32__
 	if (pipe(fd) < 0)
 		return;
 	pid = fork();
@@ -55,6 +79,7 @@ void setup_pager(void)
 	/* return in the child */
 	if (!pid) {
 		dup2(fd[1], 1);
+		dup2(fd[1], 2);
 		close(fd[0]);
 		close(fd[1]);
 		return;
@@ -69,4 +94,29 @@ void setup_pager(void)
 	run_pager(pager);
 	die("unable to execute pager '%s'", pager);
 	exit(255);
+#else
+	/* spawn the pager */
+	pager_argv[2] = pager;
+	if (start_command(&pager_process))
+		return;
+
+	/* original process continues, but writes to the pipe */
+	dup2(pager_process.in, 1);
+	dup2(pager_process.in, 2);
+	close(pager_process.in);
+
+	/* this makes sure that the parent terminates after the pager */
+	atexit(wait_for_pager);
+#endif
+}
+
+int pager_in_use(void)
+{
+	const char *env;
+
+	if (spawned_pager)
+		return 1;
+
+	env = getenv("GIT_PAGER_IN_USE");
+	return env ? git_config_bool("GIT_PAGER_IN_USE", env) : 0;
 }