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Merge branch 'zj/term-columns' into maint

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* zj/term-columns:
  pager: find out the terminal width before spawning the pager
This commit is contained in:
Junio C Hamano 2012-02-21 15:00:15 -08:00
parent 1e2545c687 ad6c3739a3
commit c17ff2a361
3 changed files with 38 additions and 22 deletions
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1
cache.h
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@ -1176,6 +1176,7 @@ extern void setup_pager(void);
extern const char *pager_program;
extern int pager_in_use(void);
extern int pager_use_color;
extern int term_columns(void);
extern const char *editor_program;
extern const char *askpass_program;

22
help.c
View file

@ -5,28 +5,6 @@
#include "help.h"
#include "common-cmds.h"
/* most GUI terminals set COLUMNS (although some don't export it) */
static int term_columns(void)
{
char *col_string = getenv("COLUMNS");
int n_cols;
if (col_string && (n_cols = atoi(col_string)) > 0)
return n_cols;
#ifdef TIOCGWINSZ
{
struct winsize ws;
if (!ioctl(1, TIOCGWINSZ, &ws)) {
if (ws.ws_col)
return ws.ws_col;
}
}
#endif
return 80;
}
void add_cmdname(struct cmdnames *cmds, const char *name, int len)
{
struct cmdname *ent = xmalloc(sizeof(*ent) + len + 1);

37
pager.c
View file

@ -76,6 +76,12 @@ void setup_pager(void)
if (!pager)
return;
/*
* force computing the width of the terminal before we redirect
* the standard output to the pager.
*/
(void) term_columns();
setenv("GIT_PAGER_IN_USE", "true", 1);
/* spawn the pager */
@ -110,3 +116,34 @@ int pager_in_use(void)
env = getenv("GIT_PAGER_IN_USE");
return env ? git_config_bool("GIT_PAGER_IN_USE", env) : 0;
}
/*
* Return cached value (if set) or $COLUMNS environment variable (if
* set and positive) or ioctl(1, TIOCGWINSZ).ws_col (if positive),
* and default to 80 if all else fails.
*/
int term_columns(void)
{
static int term_columns_at_startup;
char *col_string;
int n_cols;
if (term_columns_at_startup)
return term_columns_at_startup;
term_columns_at_startup = 80;
col_string = getenv("COLUMNS");
if (col_string && (n_cols = atoi(col_string)) > 0)
term_columns_at_startup = n_cols;
#ifdef TIOCGWINSZ
else {
struct winsize ws;
if (!ioctl(1, TIOCGWINSZ, &ws) && ws.ws_col)
term_columns_at_startup = ws.ws_col;
}
#endif
return term_columns_at_startup;
}