diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | cache.h | 3 | ||||
| -rw-r--r-- | pager.c | 48 |
3 files changed, 52 insertions, 1 deletions
@@ -205,7 +205,7 @@ LIB_OBJS = \ quote.o read-cache.o refs.o run-command.o \ server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \ tag.o tree.o usage.o config.o environment.o ctype.o copy.o \ - fetch-clone.o revision.o \ + fetch-clone.o revision.o pager.o \ $(DIFF_OBJS) LIBS = $(LIB_FILE) @@ -352,4 +352,7 @@ extern int copy_fd(int ifd, int ofd); extern int receive_unpack_pack(int fd[2], const char *me, int quiet); extern int receive_keep_pack(int fd[2], const char *me, int quiet); +/* pager.c */ +extern void setup_pager(void); + #endif /* CACHE_H */ diff --git a/pager.c b/pager.c new file mode 100644 index 0000000000..1364e15d23 --- /dev/null +++ b/pager.c @@ -0,0 +1,48 @@ +#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); +} |