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, const char *inbuf, int maxout) |
Variables | |
static char | enddata [80] = "" |
static char | prepdata [80] = "" |
static char | quitdata [80] = "" |
static const char *const | 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 242 of file term.c.
References ast_opt_force_black_background, ast_str_append(), check_bgcolor(), check_colors_allowed(), check_fgcolor(), COLOR_BLACK, and ESC.
Referenced by ast_xmldoc_printable(), data_result_print_cli(), and data_result_print_cli_node().
00243 { 00244 int attr = 0; 00245 00246 if (!check_colors_allowed(fgcolor)) { 00247 return -1; 00248 } 00249 00250 check_fgcolor(&fgcolor, &attr); 00251 check_bgcolor(&bgcolor); 00252 00253 if (ast_opt_force_black_background) { 00254 ast_str_append(str, 0, "%c[%d;%d;%dm", ESC, attr, fgcolor, COLOR_BLACK + 10); 00255 } else if (bgcolor) { 00256 ast_str_append(str, 0, "%c[%d;%d;%dm", ESC, attr, fgcolor, bgcolor + 10); 00257 } else { 00258 ast_str_append(str, 0, "%c[%d;%dm", ESC, attr, fgcolor); 00259 } 00260 00261 return 0; 00262 }
int ast_term_init | ( | void | ) |
Provided by term.c
Definition at line 87 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().
00088 { 00089 char *term = getenv("TERM"); 00090 char termfile[256] = ""; 00091 char buffer[512] = ""; 00092 int termfd = -1, parseokay = 0, i; 00093 00094 if (ast_opt_no_color) { 00095 return 0; 00096 } 00097 00098 if (!ast_opt_console) { 00099 /* If any remote console is not compatible, we'll strip the color codes at that point */ 00100 vt100compat = 1; 00101 goto end; 00102 } 00103 00104 if (!term) { 00105 return 0; 00106 } 00107 00108 for (i = 0;; i++) { 00109 if (termpath[i] == NULL) { 00110 break; 00111 } 00112 snprintf(termfile, sizeof(termfile), "%s/%c/%s", termpath[i], *term, term); 00113 termfd = open(termfile, O_RDONLY); 00114 if (termfd > -1) { 00115 break; 00116 } 00117 } 00118 if (termfd > -1) { 00119 int actsize = read(termfd, buffer, sizeof(buffer) - 1); 00120 short sz_names = convshort(buffer + 2); 00121 short sz_bools = convshort(buffer + 4); 00122 short n_nums = convshort(buffer + 6); 00123 00124 /* if ((sz_names + sz_bools) & 1) 00125 sz_bools++; */ 00126 00127 if (sz_names + sz_bools + n_nums < actsize) { 00128 /* Offset 13 is defined in /usr/include/term.h, though we do not 00129 * include it here, as it conflicts with include/asterisk/term.h */ 00130 short max_colors = convshort(buffer + 12 + sz_names + sz_bools + 13 * 2); 00131 if (max_colors > 0) { 00132 vt100compat = 1; 00133 } 00134 parseokay = 1; 00135 } 00136 close(termfd); 00137 } 00138 00139 if (!parseokay) { 00140 /* These comparisons should not be substrings nor case-insensitive, as 00141 * terminal types are very particular about how they treat suffixes and 00142 * capitalization. For example, terminal type 'linux-m' does NOT 00143 * support color, while 'linux' does. Not even all vt100* terminals 00144 * support color, either (e.g. 'vt100+fnkeys'). */ 00145 if (!strcmp(term, "linux")) { 00146 vt100compat = 1; 00147 } else if (!strcmp(term, "xterm")) { 00148 vt100compat = 1; 00149 } else if (!strcmp(term, "xterm-color")) { 00150 vt100compat = 1; 00151 } else if (!strcmp(term, "xterm-256color")) { 00152 vt100compat = 1; 00153 } else if (!strncmp(term, "Eterm", 5)) { 00154 /* Both entries which start with Eterm support color */ 00155 vt100compat = 1; 00156 } else if (!strcmp(term, "vt100")) { 00157 vt100compat = 1; 00158 } else if (!strncmp(term, "crt", 3)) { 00159 /* Both crt terminals support color */ 00160 vt100compat = 1; 00161 } 00162 } 00163 00164 end: 00165 if (vt100compat) { 00166 /* Make commands show up in nice colors */ 00167 if (ast_opt_light_background) { 00168 snprintf(prepdata, sizeof(prepdata), "%c[%dm", ESC, COLOR_BROWN); 00169 snprintf(enddata, sizeof(enddata), "%c[%dm", ESC, COLOR_BLACK); 00170 snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); 00171 } else if (ast_opt_force_black_background) { 00172 snprintf(prepdata, sizeof(prepdata), "%c[%d;%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN, COLOR_BLACK + 10); 00173 snprintf(enddata, sizeof(enddata), "%c[%d;%d;%dm", ESC, ATTR_RESET, COLOR_WHITE, COLOR_BLACK + 10); 00174 snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); 00175 } else { 00176 snprintf(prepdata, sizeof(prepdata), "%c[%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN); 00177 snprintf(enddata, sizeof(enddata), "%c[%d;%dm", ESC, ATTR_RESET, COLOR_WHITE); 00178 snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC); 00179 } 00180 } 00181 return 0; 00182 }
static void check_bgcolor | ( | int * | bgcolor | ) | [static] |
Definition at line 230 of file term.c.
Referenced by ast_term_color_code(), and term_color_code().
static int check_colors_allowed | ( | int | fgcolor | ) | [static] |
Definition at line 237 of file term.c.
Referenced by ast_term_color_code(), and term_color_code().
00238 { 00239 return (!vt100compat || !fgcolor) ? 0 : 1; 00240 }
static void check_fgcolor | ( | int * | fgcolor, | |
int * | attr | |||
) | [static] |
Definition at line 218 of file term.c.
References ast_opt_light_background, ATTR_BRIGHT, and opposite().
Referenced by ast_term_color_code(), and term_color_code().
00219 { 00220 if (*fgcolor & 128) { 00221 *attr = ast_opt_light_background ? 0 : ATTR_BRIGHT; 00222 *fgcolor &= ~128; 00223 } 00224 00225 if (ast_opt_light_background) { 00226 *fgcolor = opposite(*fgcolor); 00227 } 00228 }
static short convshort | ( | char * | s | ) | [static] |
Definition at line 72 of file term.c.
Referenced by ast_term_init().
static int opposite | ( | int | color | ) | [static] |
Definition at line 57 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().
00058 { 00059 int lookup[] = { 00060 /* BLACK */ COLOR_BLACK, 00061 /* RED */ COLOR_MAGENTA, 00062 /* GREEN */ COLOR_GREEN, 00063 /* BROWN */ COLOR_BROWN, 00064 /* BLUE */ COLOR_CYAN, 00065 /* MAGENTA */ COLOR_RED, 00066 /* CYAN */ COLOR_BLUE, 00067 /* WHITE */ COLOR_BLACK }; 00068 return color ? lookup[color - 30] : 0; 00069 }
char* term_color | ( | char * | outbuf, | |
const char * | inbuf, | |||
int | fgcolor, | |||
int | bgcolor, | |||
int | maxout | |||
) |
Definition at line 184 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(), handle_showmancmd(), logger_print_normal(), lua_pbx_exec(), main(), pbx_extension_helper(), print_app_docs(), realtime_exec(), show_config_description(), and start_resource().
00185 { 00186 int attr = 0; 00187 00188 if (!vt100compat) { 00189 ast_copy_string(outbuf, inbuf, maxout); 00190 return outbuf; 00191 } 00192 if (!fgcolor) { 00193 ast_copy_string(outbuf, inbuf, maxout); 00194 return outbuf; 00195 } 00196 00197 if (fgcolor & 128) { 00198 attr = ast_opt_light_background ? 0 : ATTR_BRIGHT; 00199 fgcolor &= ~128; 00200 } 00201 00202 if (bgcolor) { 00203 bgcolor &= ~128; 00204 } 00205 00206 if (ast_opt_light_background) { 00207 fgcolor = opposite(fgcolor); 00208 } 00209 00210 if (ast_opt_force_black_background) { 00211 snprintf(outbuf, maxout, "%c[%d;%d;%dm%s%c[%d;%dm", ESC, attr, fgcolor, bgcolor + 10, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10); 00212 } else { 00213 snprintf(outbuf, maxout, "%c[%d;%dm%s%c[0m", ESC, attr, fgcolor, inbuf, ESC); 00214 } 00215 return outbuf; 00216 }
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 264 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().
00265 { 00266 int attr = 0; 00267 00268 if (!check_colors_allowed(fgcolor)) { 00269 *outbuf = '\0'; 00270 return outbuf; 00271 } 00272 00273 check_fgcolor(&fgcolor, &attr); 00274 check_bgcolor(&bgcolor); 00275 00276 if (ast_opt_force_black_background) { 00277 snprintf(outbuf, maxout, "%c[%d;%d;%dm", ESC, attr, fgcolor, COLOR_BLACK + 10); 00278 } else if (bgcolor) { 00279 snprintf(outbuf, maxout, "%c[%d;%d;%dm", ESC, attr, fgcolor, bgcolor + 10); 00280 } else { 00281 snprintf(outbuf, maxout, "%c[%d;%dm", ESC, attr, fgcolor); 00282 } 00283 00284 return outbuf; 00285 }
char* term_end | ( | void | ) |
Definition at line 365 of file term.c.
Referenced by ast_xmldoc_printable(), consolehandler(), and main().
00366 { 00367 return enddata; 00368 }
void term_filter_escapes | ( | char * | line | ) |
Definition at line 338 of file term.c.
Referenced by ast_log().
00339 { 00340 int i; 00341 int len = strlen(line); 00342 00343 for (i = 0; i < len; i++) { 00344 if (line[i] != ESC) 00345 continue; 00346 if ((i < (len - 2)) && 00347 (line[i + 1] == 0x5B)) { 00348 switch (line[i + 2]) { 00349 case 0x30: 00350 case 0x31: 00351 case 0x33: 00352 continue; 00353 } 00354 } 00355 /* replace ESC with a space */ 00356 line[i] = ' '; 00357 } 00358 }
char* term_prep | ( | void | ) |
char* term_prompt | ( | char * | outbuf, | |
const char * | inbuf, | |||
int | maxout | |||
) |
Definition at line 309 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.
00310 { 00311 if (!vt100compat) { 00312 ast_copy_string(outbuf, inbuf, maxout); 00313 return outbuf; 00314 } 00315 if (ast_opt_force_black_background) { 00316 snprintf(outbuf, maxout, "%c[%d;%dm%c%c[%d;%dm%s", 00317 ESC, COLOR_BLUE, COLOR_BLACK + 10, 00318 inbuf[0], 00319 ESC, COLOR_WHITE, COLOR_BLACK + 10, 00320 inbuf + 1); 00321 } else if (ast_opt_light_background) { 00322 snprintf(outbuf, maxout, "%c[%d;0m%c%c[%d;0m%s", 00323 ESC, COLOR_BLUE, 00324 inbuf[0], 00325 ESC, COLOR_BLACK, 00326 inbuf + 1); 00327 } else { 00328 snprintf(outbuf, maxout, "%c[%d;%d;0m%c%c[%d;%d;0m%s", 00329 ESC, ATTR_BRIGHT, COLOR_BLUE, 00330 inbuf[0], 00331 ESC, 0, COLOR_WHITE, 00332 inbuf + 1); 00333 } 00334 return outbuf; 00335 }
char* term_quit | ( | void | ) |
Definition at line 370 of file term.c.
Referenced by ast_el_read_char(), main(), and really_quit().
00371 { 00372 return quitdata; 00373 }
char* term_strip | ( | char * | outbuf, | |
const char * | inbuf, | |||
int | maxout | |||
) |
Definition at line 287 of file term.c.
References ESC.
Referenced by action_command(), ast_log_vsyslog(), and logger_print_normal().
00288 { 00289 char *outbuf_ptr = outbuf; 00290 const char *inbuf_ptr = inbuf; 00291 00292 while (outbuf_ptr < outbuf + maxout) { 00293 switch (*inbuf_ptr) { 00294 case ESC: 00295 while (*inbuf_ptr && (*inbuf_ptr != 'm')) 00296 inbuf_ptr++; 00297 break; 00298 default: 00299 *outbuf_ptr = *inbuf_ptr; 00300 outbuf_ptr++; 00301 } 00302 if (! *inbuf_ptr) 00303 break; 00304 inbuf_ptr++; 00305 } 00306 return outbuf; 00307 }
int vt100compat [static] |