Terminal Routines. More...
#include "asterisk.h"
#include "asterisk/_private.h"
#include <sys/time.h>
#include <signal.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "asterisk/term.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"
Go to the source code of this file.
Functions | |
int | ast_term_color_code (struct ast_str **str, int fgcolor, int bgcolor) |
Append a color sequence to an ast_str. | |
int | ast_term_init (void) |
static void | check_bgcolor (int *bgcolor) |
static int | check_colors_allowed (int fgcolor) |
static void | check_fgcolor (int *fgcolor, int *attr) |
static short | convshort (char *s) |
static int | opposite (int color) |
char * | term_color (char *outbuf, const char *inbuf, int fgcolor, int bgcolor, int maxout) |
char * | term_color_code (char *outbuf, int fgcolor, int bgcolor, int maxout) |
Write a color sequence to a string. | |
char * | term_end (void) |
void | term_filter_escapes (char *line) |
char * | term_prep (void) |
char * | term_prompt (char *outbuf, const char *inbuf, int maxout) |
char * | term_quit (void) |
char * | term_strip (char *outbuf, char *inbuf, int maxout) |
Variables | |
static char | enddata [80] = "" |
static char | prepdata [80] = "" |
static char | quitdata [80] = "" |
static const char * | termpath [] |
static int | vt100compat |
Terminal Routines.
Definition in file term.c.
int ast_term_color_code | ( | struct ast_str ** | str, |
int | fgcolor, | ||
int | bgcolor | ||
) |
Append a color sequence to an ast_str.
str | The string to append to |
fgcolor | foreground color |
bgcolor | background color |
0 | success |
-1 | failure |
Definition at line 236 of file term.c.
References ast_opt_force_black_background, ast_str_append(), check_bgcolor(), check_colors_allowed(), check_fgcolor(), COLOR_BLACK, and ESC.
{ int attr = 0; if (!check_colors_allowed(fgcolor)) { return -1; } check_fgcolor(&fgcolor, &attr); check_bgcolor(&bgcolor); if (ast_opt_force_black_background) { ast_str_append(str, 0, "%c[%d;%d;%dm", ESC, attr, fgcolor, COLOR_BLACK + 10); } else if (bgcolor) { ast_str_append(str, 0, "%c[%d;%d;%dm", ESC, attr, fgcolor, bgcolor + 10); } else { ast_str_append(str, 0, "%c[%d;%dm", ESC, attr, fgcolor); } return 0; }
int ast_term_init | ( | void | ) |
Provided by term.c
Definition at line 83 of file term.c.
References ast_opt_console, ast_opt_force_black_background, ast_opt_light_background, ast_opt_no_color, ATTR_BRIGHT, ATTR_RESET, COLOR_BLACK, COLOR_BROWN, COLOR_WHITE, convshort(), and ESC.
Referenced by main().
{ char *term = getenv("TERM"); char termfile[256] = ""; char buffer[512] = ""; int termfd = -1, parseokay = 0, i; if (ast_opt_no_color) { return 0; } if (!ast_opt_console) { /* If any remote console is not compatible, we'll strip the color codes at that point */ vt100compat = 1; goto end; } if (!term) { return 0; } for (i = 0;; i++) { if (termpath[i] == NULL) { break; } snprintf(termfile, sizeof(termfile), "%s/%c/%s", termpath[i], *term, term); termfd = open(termfile, O_RDONLY); if (termfd > -1) { break; } } if (termfd > -1) { int actsize = read(termfd, buffer, sizeof(buffer) - 1); short sz_names = convshort(buffer + 2); short sz_bools = convshort(buffer + 4); short n_nums = convshort(buffer + 6); /* if ((sz_names + sz_bools) & 1) sz_bools++; */ if (sz_names + sz_bools + n_nums < actsize) { /* Offset 13 is defined in /usr/include/term.h, though we do not * include it here, as it conflicts with include/asterisk/term.h */ short max_colors = convshort(buffer + 12 + sz_names + sz_bools + 13 * 2); if (max_colors > 0) { vt100compat = 1; } parseokay = 1; } close(termfd); } if (!parseokay) { /* These comparisons should not be substrings nor case-insensitive, as * terminal types are very particular about how they treat suffixes and * capitalization. For example, terminal type 'linux-m' does NOT * support color, while 'linux' does. Not even all vt100* terminals * support color, either (e.g. 'vt100+fnkeys'). */ if (!strcmp(term, "linux")) { vt100compat = 1; } else if (!strcmp(term, "xterm")) { vt100compat = 1; } else if (!strcmp(term, "xterm-color")) { vt100compat = 1; } else if (!strncmp(term, "Eterm", 5)) { /* Both entries which start with Eterm support color */ vt100compat = 1; } else if (!strcmp(term, "vt100")) { vt100compat = 1; } else if (!strncmp(term, "crt", 3)) { /* Both crt terminals support color */ vt100compat = 1; } } end: if (vt100compat) { /* Make commands show up in nice colors */ if (ast_opt_light_background) { snprintf(prepdata, sizeof(prepdata), "%c[%dm", ESC, COLOR_BROWN); snprintf(enddata, sizeof(enddata), "%c[%dm", ESC, COLOR_BLACK); snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); } else if (ast_opt_force_black_background) { snprintf(prepdata, sizeof(prepdata), "%c[%d;%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN, COLOR_BLACK + 10); snprintf(enddata, sizeof(enddata), "%c[%d;%d;%dm", ESC, ATTR_RESET, COLOR_WHITE, COLOR_BLACK + 10); snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); } else { snprintf(prepdata, sizeof(prepdata), "%c[%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN); snprintf(enddata, sizeof(enddata), "%c[%d;%dm", ESC, ATTR_RESET, COLOR_WHITE); snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); } } return 0; }
static void check_bgcolor | ( | int * | bgcolor | ) | [static] |
Definition at line 224 of file term.c.
Referenced by ast_term_color_code(), and term_color_code().
{
if (*bgcolor) {
*bgcolor &= ~128;
}
}
static int check_colors_allowed | ( | int | fgcolor | ) | [static] |
Definition at line 231 of file term.c.
Referenced by ast_term_color_code(), and term_color_code().
{ return (!vt100compat || !fgcolor) ? 0 : 1; }
static void check_fgcolor | ( | int * | fgcolor, |
int * | attr | ||
) | [static] |
Definition at line 212 of file term.c.
References ast_opt_light_background, ATTR_BRIGHT, and opposite().
Referenced by ast_term_color_code(), and term_color_code().
{ if (*fgcolor & 128) { *attr = ast_opt_light_background ? 0 : ATTR_BRIGHT; *fgcolor &= ~128; } if (ast_opt_light_background) { *fgcolor = opposite(*fgcolor); } }
static short convshort | ( | char * | s | ) | [static] |
Definition at line 68 of file term.c.
Referenced by ast_term_init().
static int opposite | ( | int | color | ) | [static] |
Definition at line 53 of file term.c.
References COLOR_BLACK, COLOR_BLUE, COLOR_BROWN, COLOR_CYAN, COLOR_GREEN, COLOR_MAGENTA, and COLOR_RED.
Referenced by check_fgcolor(), and term_color().
{ int lookup[] = { /* BLACK */ COLOR_BLACK, /* RED */ COLOR_MAGENTA, /* GREEN */ COLOR_GREEN, /* BROWN */ COLOR_BROWN, /* BLUE */ COLOR_CYAN, /* MAGENTA */ COLOR_RED, /* CYAN */ COLOR_BLUE, /* WHITE */ COLOR_BLACK }; return color ? lookup[color - 30] : 0; }
char* term_color | ( | char * | outbuf, |
const char * | inbuf, | ||
int | fgcolor, | ||
int | bgcolor, | ||
int | maxout | ||
) |
Definition at line 178 of file term.c.
References ast_copy_string(), ast_opt_force_black_background, ast_opt_light_background, ATTR_BRIGHT, COLOR_BLACK, COLOR_WHITE, ESC, and opposite().
Referenced by __ast_custom_function_register(), __ast_register_translator(), ast_frame_dump(), ast_register_application2(), ast_unregister_translator(), fix_header(), handle_cli_agi_show(), handle_dahdi_show_cadences(), handle_show_function(), logger_print_normal(), lua_pbx_exec(), main(), pbx_extension_helper(), print_app_docs(), realtime_exec(), show_config_description(), and start_resource().
{ int attr = 0; if (!vt100compat) { ast_copy_string(outbuf, inbuf, maxout); return outbuf; } if (!fgcolor) { ast_copy_string(outbuf, inbuf, maxout); return outbuf; } if (fgcolor & 128) { attr = ast_opt_light_background ? 0 : ATTR_BRIGHT; fgcolor &= ~128; } if (bgcolor) { bgcolor &= ~128; } if (ast_opt_light_background) { fgcolor = opposite(fgcolor); } if (ast_opt_force_black_background) { snprintf(outbuf, maxout, "%c[%d;%d;%dm%s%c[%d;%dm", ESC, attr, fgcolor, bgcolor + 10, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10); } else { snprintf(outbuf, maxout, "%c[%d;%dm%s%c[0m", ESC, attr, fgcolor, inbuf, ESC); } return outbuf; }
char* term_color_code | ( | char * | outbuf, |
int | fgcolor, | ||
int | bgcolor, | ||
int | maxout | ||
) |
Write a color sequence to a string.
outbuf | the location to write to |
fgcolor | foreground color |
bgcolor | background color |
maxout | maximum number of characters to write |
Definition at line 258 of file term.c.
References ast_opt_force_black_background, check_bgcolor(), check_colors_allowed(), check_fgcolor(), COLOR_BLACK, and ESC.
Referenced by cli_prompt().
{ int attr = 0; if (!check_colors_allowed(fgcolor)) { *outbuf = '\0'; return outbuf; } check_fgcolor(&fgcolor, &attr); check_bgcolor(&bgcolor); if (ast_opt_force_black_background) { snprintf(outbuf, maxout, "%c[%d;%d;%dm", ESC, attr, fgcolor, COLOR_BLACK + 10); } else if (bgcolor) { snprintf(outbuf, maxout, "%c[%d;%d;%dm", ESC, attr, fgcolor, bgcolor + 10); } else { snprintf(outbuf, maxout, "%c[%d;%dm", ESC, attr, fgcolor); } return outbuf; }
char* term_end | ( | void | ) |
void term_filter_escapes | ( | char * | line | ) |
char* term_prep | ( | void | ) |
char* term_prompt | ( | char * | outbuf, |
const char * | inbuf, | ||
int | maxout | ||
) |
Definition at line 302 of file term.c.
References ast_copy_string(), ast_opt_force_black_background, ast_opt_light_background, ATTR_BRIGHT, COLOR_BLACK, COLOR_BLUE, COLOR_WHITE, and ESC.
{ if (!vt100compat) { ast_copy_string(outbuf, inbuf, maxout); return outbuf; } if (ast_opt_force_black_background) { snprintf(outbuf, maxout, "%c[%d;%dm%c%c[%d;%dm%s", ESC, COLOR_BLUE, COLOR_BLACK + 10, inbuf[0], ESC, COLOR_WHITE, COLOR_BLACK + 10, inbuf + 1); } else if (ast_opt_light_background) { snprintf(outbuf, maxout, "%c[%d;0m%c%c[%d;0m%s", ESC, COLOR_BLUE, inbuf[0], ESC, COLOR_BLACK, inbuf + 1); } else { snprintf(outbuf, maxout, "%c[%d;%d;0m%c%c[%d;%d;0m%s", ESC, ATTR_BRIGHT, COLOR_BLUE, inbuf[0], ESC, 0, COLOR_WHITE, inbuf + 1); } return outbuf; }
char* term_quit | ( | void | ) |
Definition at line 363 of file term.c.
References quitdata.
Referenced by ast_el_read_char(), main(), and quit_handler().
{ return quitdata; }
char* term_strip | ( | char * | outbuf, |
char * | inbuf, | ||
int | maxout | ||
) |
Definition at line 281 of file term.c.
Referenced by __verboser(), action_command(), ast_log_vsyslog(), and logger_print_normal().
char enddata[80] = "" [static] |
Definition at line 43 of file term.c.
Referenced by term_end().
char prepdata[80] = "" [static] |
Definition at line 42 of file term.c.
Referenced by term_prep().
char quitdata[80] = "" [static] |
Definition at line 44 of file term.c.
Referenced by term_quit().
int vt100compat [static] |