term.c

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/*
 * Asterisk -- A telephony toolkit for Linux.
 *
 * Channel Management
 * 
 * Copyright (C) 1999, Mark Spencer
 *
 * Mark Spencer <markster@linux-support.net>
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License
 */

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <asterisk/term.h>
#include <asterisk/options.h>
#include "asterisk.h"

static int vt100compat = 0;

static char prepdata[80] = "";
static char enddata[80] = "";
static char quitdata[80] = "";

int term_init(void)
{
   char *term = getenv("TERM");
   if (!term)
      return 0;
   if (!option_console || option_nocolor || !option_nofork)
      return 0;
   if (!strncasecmp(term, "linux", 5)) 
      vt100compat = 1; else
   if (!strncasecmp(term, "xterm", 5))
      vt100compat = 1; else
   if (!strncasecmp(term, "crt", 3))
      vt100compat = 1; else
   if (!strncasecmp(term, "vt", 2))
      vt100compat = 1;
   if (vt100compat) {
      /* Make commands show up in nice colors */
      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);
   }
   return 0;
}

char *term_color(char *outbuf, const char *inbuf, int fgcolor, int bgcolor, int maxout)
{
   int attr=0;
   char tmp[40];
   if (!vt100compat) {
      strncpy(outbuf, inbuf, maxout -1);
      return outbuf;
   }
   if (!fgcolor && !bgcolor) {
      strncpy(outbuf, inbuf, maxout - 1);
      return outbuf;
   }
   if ((fgcolor & 128) && (bgcolor & 128)) {
      /* Can't both be highlighted */
      strncpy(outbuf, inbuf, maxout - 1);
      return outbuf;
   }
   if (!bgcolor)
      bgcolor = COLOR_BLACK;

   if (bgcolor) {
      bgcolor &= ~128;
      bgcolor += 10;
   }
   if (fgcolor & 128) {
      attr = ATTR_BRIGHT;
      fgcolor &= ~128;
   }
   if (fgcolor && bgcolor) {
      snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
   } else if (bgcolor) {
      snprintf(tmp, sizeof(tmp), "%d", bgcolor);
   } else if (fgcolor) {
      snprintf(tmp, sizeof(tmp), "%d", fgcolor);
   }
   if (attr) {
      snprintf(outbuf, maxout, "%c[%d;%sm%s%c[0;%d;%dm", ESC, attr, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
   } else {
      snprintf(outbuf, maxout, "%c[%sm%s%c[0;%d;%dm", ESC, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
   }
   return outbuf;
}

char *term_color_code(char *outbuf, int fgcolor, int bgcolor, int maxout)
{
   int attr=0;
   char tmp[40];
   if ((!vt100compat) || (!fgcolor && !bgcolor)) {
      *outbuf = '\0';
      return outbuf;
   }
   if ((fgcolor & 128) && (bgcolor & 128)) {
      /* Can't both be highlighted */
      *outbuf = '\0';
      return outbuf;
   }
   if (!bgcolor)
      bgcolor = COLOR_BLACK;

   if (bgcolor) {
      bgcolor &= ~128;
      bgcolor += 10;
   }
   if (fgcolor & 128) {
      attr = ATTR_BRIGHT;
      fgcolor &= ~128;
   }
   if (fgcolor && bgcolor) {
      snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
   } else if (bgcolor) {
      snprintf(tmp, sizeof(tmp), "%d", bgcolor);
   } else if (fgcolor) {
      snprintf(tmp, sizeof(tmp), "%d", fgcolor);
   }
   if (attr) {
      snprintf(outbuf, maxout, "%c[%d;%sm", ESC, attr, tmp);
   } else {
      snprintf(outbuf, maxout, "%c[%sm", ESC, tmp);
   }
   return outbuf;
}

char *term_strip(char *outbuf, char *inbuf, int maxout)
{
   char *outbuf_ptr = outbuf, *inbuf_ptr = inbuf;

   while (outbuf_ptr < outbuf + maxout) {
      switch (*inbuf_ptr) {
         case ESC:
            while (*inbuf_ptr && (*inbuf_ptr != 'm'))
               inbuf_ptr++;
            break;
         default:
            *outbuf_ptr = *inbuf_ptr;
            outbuf_ptr++;
      }
      if (! *inbuf_ptr)
         break;
      inbuf_ptr++;
   }
   return outbuf;
}

char *term_prompt(char *outbuf, const char *inbuf, int maxout)
{
   if (!vt100compat) {
      strncpy(outbuf, inbuf, maxout -1);
      return outbuf;
   }
   snprintf(outbuf, maxout, "%c[%d;%d;%dm%c%c[%d;%d;%dm%s",
      ESC, ATTR_BRIGHT, COLOR_BLUE, COLOR_BLACK + 10,
      inbuf[0],
      ESC, 0, COLOR_WHITE, COLOR_BLACK + 10,
      inbuf + 1);
   return outbuf;
}

char *term_prep(void)
{
   return prepdata;
}

char *term_end(void)
{
   return enddata;
}

char *term_quit(void)
{
   return quitdata;
}

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