diff options
Diffstat (limited to 'pager.c')
| -rw-r--r-- | pager.c | 63 |
1 files changed, 45 insertions, 18 deletions
@@ -11,29 +11,29 @@ static struct child_process pager_process = CHILD_PROCESS_INIT; static const char *pager_program; -static void wait_for_pager(int in_signal) +/* Is the value coming back from term_columns() just a guess? */ +static int term_columns_guessed; + + +static void close_pager_fds(void) { - if (!in_signal) { - fflush(stdout); - fflush(stderr); - } /* signal EOF to pager */ close(1); close(2); - if (in_signal) - finish_command_in_signal(&pager_process); - else - finish_command(&pager_process); } static void wait_for_pager_atexit(void) { - wait_for_pager(0); + fflush(stdout); + fflush(stderr); + close_pager_fds(); + finish_command(&pager_process); } static void wait_for_pager_signal(int signo) { - wait_for_pager(1); + close_pager_fds(); + finish_command_in_signal(&pager_process); sigchain_pop(signo); raise(signo); } @@ -68,7 +68,7 @@ const char *git_pager(int stdout_is_tty) return pager; } -static void setup_pager_env(struct argv_array *env) +static void setup_pager_env(struct strvec *env) { const char **argv; int i; @@ -88,7 +88,7 @@ static void setup_pager_env(struct argv_array *env) *cp = '\0'; if (!getenv(argv[i])) { *cp = '='; - argv_array_push(env, argv[i]); + strvec_push(env, argv[i]); } } free(pager_env); @@ -97,9 +97,10 @@ static void setup_pager_env(struct argv_array *env) void prepare_pager_args(struct child_process *pager_process, const char *pager) { - argv_array_push(&pager_process->args, pager); + strvec_push(&pager_process->args, pager); pager_process->use_shell = 1; setup_pager_env(&pager_process->env_array); + pager_process->trace2_child_class = "pager"; } void setup_pager(void) @@ -117,7 +118,8 @@ void setup_pager(void) { char buf[64]; xsnprintf(buf, sizeof(buf), "%d", term_columns()); - setenv("COLUMNS", buf, 0); + if (!term_columns_guessed) + setenv("COLUMNS", buf, 0); } setenv("GIT_PAGER_IN_USE", "true", 1); @@ -125,7 +127,7 @@ void setup_pager(void) /* spawn the pager */ prepare_pager_args(&pager_process, pager); pager_process.in = -1; - argv_array_push(&pager_process.env_array, "GIT_PAGER_IN_USE"); + strvec_push(&pager_process.env_array, "GIT_PAGER_IN_USE"); if (start_command(&pager_process)) return; @@ -161,15 +163,20 @@ int term_columns(void) return term_columns_at_startup; term_columns_at_startup = 80; + term_columns_guessed = 1; col_string = getenv("COLUMNS"); - if (col_string && (n_cols = atoi(col_string)) > 0) + if (col_string && (n_cols = atoi(col_string)) > 0) { term_columns_at_startup = n_cols; + term_columns_guessed = 0; + } #ifdef TIOCGWINSZ else { struct winsize ws; - if (!ioctl(1, TIOCGWINSZ, &ws) && ws.ws_col) + if (!ioctl(1, TIOCGWINSZ, &ws) && ws.ws_col) { term_columns_at_startup = ws.ws_col; + term_columns_guessed = 0; + } } #endif @@ -177,6 +184,26 @@ int term_columns(void) } /* + * Clear the entire line, leave cursor in first column. + */ +void term_clear_line(void) +{ + if (is_terminal_dumb()) + /* + * Fall back to print a terminal width worth of space + * characters (hoping that the terminal is still as wide + * as it was upon the first call to term_columns()). + */ + fprintf(stderr, "\r%*s\r", term_columns(), ""); + else + /* + * On non-dumb terminals use an escape sequence to clear + * the whole line, no matter how wide the terminal. + */ + fputs("\r\033[K", stderr); +} + +/* * How many columns do we need to show this number in decimal? */ int decimal_width(uintmax_t number) |