Fri Sep 29 11:15:10 2006

Asterisk developer's documentation


term.c File Reference

Terminal Routines. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "asterisk.h"
#include "asterisk/term.h"
#include "asterisk/options.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"

Include dependency graph for term.c:

Go to the source code of this file.

Functions

static short convshort (char *s)
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)
char * term_end (void)
int term_init (void)
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 = 0


Detailed Description

Terminal Routines.

Definition in file term.c.


Function Documentation

static short convshort ( char *  s  )  [static]

Definition at line 59 of file term.c.

Referenced by term_init().

00060 {
00061    register int a,b;
00062 
00063    a = (int) s[0] & 0377;
00064    b = (int) s[1] & 0377;
00065 
00066    if (a == 0377 && b == 0377)
00067       return -1;
00068    if (a == 0376 && b == 0377)
00069       return -2;
00070 
00071    return a + b * 256;
00072 }

char* term_color ( char *  outbuf,
const char *  inbuf,
int  fgcolor,
int  bgcolor,
int  maxout 
)

Definition at line 149 of file term.c.

References ATTR_BRIGHT, COLOR_BLACK, COLOR_WHITE, and ESC.

Referenced by __load_resource(), ast_frame_dump(), ast_log(), ast_register_application(), ast_register_translator(), ast_unregister_translator(), fix_header(), handle_show_application(), handle_show_function(), handle_zap_show_cadences(), load_modules(), main(), pbx_extension_helper(), and realtime_exec().

00150 {
00151    int attr=0;
00152    char tmp[40];
00153    if (!vt100compat) {
00154       ast_copy_string(outbuf, inbuf, maxout);
00155       return outbuf;
00156    }
00157    if (!fgcolor && !bgcolor) {
00158       ast_copy_string(outbuf, inbuf, maxout);
00159       return outbuf;
00160    }
00161    if ((fgcolor & 128) && (bgcolor & 128)) {
00162       /* Can't both be highlighted */
00163       ast_copy_string(outbuf, inbuf, maxout);
00164       return outbuf;
00165    }
00166    if (!bgcolor)
00167       bgcolor = COLOR_BLACK;
00168 
00169    if (bgcolor) {
00170       bgcolor &= ~128;
00171       bgcolor += 10;
00172    }
00173    if (fgcolor & 128) {
00174       attr = ATTR_BRIGHT;
00175       fgcolor &= ~128;
00176    }
00177    if (fgcolor && bgcolor) {
00178       snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
00179    } else if (bgcolor) {
00180       snprintf(tmp, sizeof(tmp), "%d", bgcolor);
00181    } else if (fgcolor) {
00182       snprintf(tmp, sizeof(tmp), "%d", fgcolor);
00183    }
00184    if (attr) {
00185       snprintf(outbuf, maxout, "%c[%d;%sm%s%c[0;%d;%dm", ESC, attr, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
00186    } else {
00187       snprintf(outbuf, maxout, "%c[%sm%s%c[0;%d;%dm", ESC, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
00188    }
00189    return outbuf;
00190 }

char* term_color_code ( char *  outbuf,
int  fgcolor,
int  bgcolor,
int  maxout 
)

Definition at line 192 of file term.c.

References ATTR_BRIGHT, COLOR_BLACK, and ESC.

Referenced by cli_prompt().

00193 {
00194    int attr=0;
00195    char tmp[40];
00196    if ((!vt100compat) || (!fgcolor && !bgcolor)) {
00197       *outbuf = '\0';
00198       return outbuf;
00199    }
00200    if ((fgcolor & 128) && (bgcolor & 128)) {
00201       /* Can't both be highlighted */
00202       *outbuf = '\0';
00203       return outbuf;
00204    }
00205    if (!bgcolor)
00206       bgcolor = COLOR_BLACK;
00207 
00208    if (bgcolor) {
00209       bgcolor &= ~128;
00210       bgcolor += 10;
00211    }
00212    if (fgcolor & 128) {
00213       attr = ATTR_BRIGHT;
00214       fgcolor &= ~128;
00215    }
00216    if (fgcolor && bgcolor) {
00217       snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
00218    } else if (bgcolor) {
00219       snprintf(tmp, sizeof(tmp), "%d", bgcolor);
00220    } else if (fgcolor) {
00221       snprintf(tmp, sizeof(tmp), "%d", fgcolor);
00222    }
00223    if (attr) {
00224       snprintf(outbuf, maxout, "%c[%d;%sm", ESC, attr, tmp);
00225    } else {
00226       snprintf(outbuf, maxout, "%c[%sm", ESC, tmp);
00227    }
00228    return outbuf;
00229 }

char* term_end ( void   ) 

Definition at line 271 of file term.c.

Referenced by consolehandler(), and main().

00272 {
00273    return enddata;
00274 }

int term_init ( void   ) 

Definition at line 74 of file term.c.

References ATTR_BRIGHT, ATTR_RESET, COLOR_BLACK, COLOR_BROWN, COLOR_WHITE, convshort(), ESC, option_console, option_nocolor, and option_nofork.

Referenced by main().

00075 {
00076    char *term = getenv("TERM");
00077    char termfile[256] = "";
00078    char buffer[512] = "";
00079    int termfd = -1, parseokay = 0, i;
00080 
00081    if (!term)
00082       return 0;
00083    if (!option_console || option_nocolor || !option_nofork)
00084       return 0;
00085 
00086    for (i=0 ;; i++) {
00087       if (termpath[i] == NULL) {
00088          break;
00089       }
00090       snprintf(termfile, sizeof(termfile), "%s/%c/%s", termpath[i], *term, term);
00091       termfd = open(termfile, O_RDONLY);
00092       if (termfd > -1) {
00093          break;
00094       }
00095    }
00096    if (termfd > -1) {
00097       int actsize = read(termfd, buffer, sizeof(buffer) - 1);
00098       short sz_names = convshort(buffer + 2);
00099       short sz_bools = convshort(buffer + 4);
00100       short n_nums   = convshort(buffer + 6);
00101 
00102       /* if ((sz_names + sz_bools) & 1)
00103          sz_bools++; */
00104 
00105       if (sz_names + sz_bools + n_nums < actsize) {
00106          /* Offset 13 is defined in /usr/include/term.h, though we do not
00107           * include it here, as it conflicts with include/asterisk/term.h */
00108          short max_colors = convshort(buffer + 12 + sz_names + sz_bools + 13 * 2);
00109          if (max_colors > 0) {
00110             vt100compat = 1;
00111          }
00112          parseokay = 1;
00113       }
00114       close(termfd);
00115    }
00116 
00117    if (!parseokay) {
00118       /* These comparisons should not be substrings nor case-insensitive, as
00119        * terminal types are very particular about how they treat suffixes and
00120        * capitalization.  For example, terminal type 'linux-m' does NOT
00121        * support color, while 'linux' does.  Not even all vt100* terminals
00122        * support color, either (e.g. 'vt100+fnkeys'). */
00123       if (!strcmp(term, "linux")) {
00124          vt100compat = 1;
00125       } else if (!strcmp(term, "xterm")) {
00126          vt100compat = 1;
00127       } else if (!strcmp(term, "xterm-color")) {
00128          vt100compat = 1;
00129       } else if (!strncmp(term, "Eterm", 5)) {
00130          /* Both entries which start with Eterm support color */
00131          vt100compat = 1;
00132       } else if (!strcmp(term, "vt100")) {
00133          vt100compat = 1;
00134       } else if (!strncmp(term, "crt", 3)) {
00135          /* Both crt terminals support color */
00136          vt100compat = 1;
00137       }
00138    }
00139 
00140    if (vt100compat) {
00141       /* Make commands show up in nice colors */
00142       snprintf(prepdata, sizeof(prepdata), "%c[%d;%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN, COLOR_BLACK + 10);
00143       snprintf(enddata, sizeof(enddata), "%c[%d;%d;%dm", ESC, ATTR_RESET, COLOR_WHITE, COLOR_BLACK + 10);
00144       snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC);
00145    }
00146    return 0;
00147 }

char* term_prep ( void   ) 

Definition at line 266 of file term.c.

00267 {
00268    return prepdata;
00269 }

char* term_prompt ( char *  outbuf,
const char *  inbuf,
int  maxout 
)

Definition at line 252 of file term.c.

References ATTR_BRIGHT, COLOR_BLACK, COLOR_BLUE, COLOR_WHITE, and ESC.

00253 {
00254    if (!vt100compat) {
00255       ast_copy_string(outbuf, inbuf, maxout);
00256       return outbuf;
00257    }
00258    snprintf(outbuf, maxout, "%c[%d;%d;%dm%c%c[%d;%d;%dm%s",
00259       ESC, ATTR_BRIGHT, COLOR_BLUE, COLOR_BLACK + 10,
00260       inbuf[0],
00261       ESC, 0, COLOR_WHITE, COLOR_BLACK + 10,
00262       inbuf + 1);
00263    return outbuf;
00264 }

char* term_quit ( void   ) 

Definition at line 276 of file term.c.

Referenced by ast_el_read_char(), main(), and quit_handler().

00277 {
00278    return quitdata;
00279 }

char* term_strip ( char *  outbuf,
char *  inbuf,
int  maxout 
)

Definition at line 231 of file term.c.

References ESC.

Referenced by ast_log(), and ast_log_vsyslog().

00232 {
00233    char *outbuf_ptr = outbuf, *inbuf_ptr = inbuf;
00234 
00235    while (outbuf_ptr < outbuf + maxout) {
00236       switch (*inbuf_ptr) {
00237          case ESC:
00238             while (*inbuf_ptr && (*inbuf_ptr != 'm'))
00239                inbuf_ptr++;
00240             break;
00241          default:
00242             *outbuf_ptr = *inbuf_ptr;
00243             outbuf_ptr++;
00244       }
00245       if (! *inbuf_ptr)
00246          break;
00247       inbuf_ptr++;
00248    }
00249    return outbuf;
00250 }


Variable Documentation

char enddata[80] = "" [static]

Definition at line 48 of file term.c.

char prepdata[80] = "" [static]

Definition at line 47 of file term.c.

char quitdata[80] = "" [static]

Definition at line 49 of file term.c.

const char* termpath[] [static]

Definition at line 51 of file term.c.

int vt100compat = 0 [static]

Definition at line 45 of file term.c.


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