diary/editor.c

/* */
This source file includes following definitions.
my_shquote
exedit
   1 /*
   2 ** Copyright (c) 2024 Amelia Campbell
   3 **
   4 ** Redistribution and use in source and binary forms, with or without
   5 ** modification, are permitted provided that the following conditions are
   6 ** met: 
   7 **
   8 **  1. Redistributions of source code must retain the above copyright
   9 **     notice, this list of conditions and the following disclaimer.
  10 **  2. Redistributions in binary form must reproduce the above copyright
  11 **     notice, this list of conditions and the following disclaimer in the
  12 **     documentation and/or other materials provided with the
  13 **     distribution.
  14 **  3. Neither the name of the copyright holder nor the names of its
  15 **     contributors may be used to endorse or promote products derived
  16 **     from this software without specific prior written permission.
  17 **
  18 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  19 ** IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  20 ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  21 ** PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 ** HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30 
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34 
  35 #include <shared/macro.h>
  36 #include <shared/term.h>
  37 
  38 #include "editor.h"
  39 
  40 
  41 /* shquote(3) is not portable */
  42 static size_t my_shquote(const char *arg, char *buf)
  43     {
  44     char ab[2];
  45     size_t i, l;
  46 
  47     /* this may not do what you want on systems that don't default to
  48     ** POSIX shell.  hopefully hell freezes over before anyone does that.
  49     */
  50     l = strlen(arg);
  51     ab [1] = '\0';
  52     buf[0] = '\'';
  53     buf[1] = '\0';
  54     for (i = 0; i <= l; i++)
  55         {
  56         if (arg[i] == '\'')
  57             strcat(buf, "\\'");
  58         else
  59             {
  60             ab[0] = arg[i];
  61             strcat(buf, ab);
  62             }
  63         }
  64     strcat(buf, "\'");
  65     return strlen(buf);
  66     }
  67 
  68 
  69 void exedit(char *fname)
  70     {
  71     /* errors in this function are mostly non-fatal */
  72     char *editor = NULL;
  73     char shcmd[512];
  74     size_t wr;
  75 
  76     shcmd[0] = '\0';
  77 
  78     if (!(editor = getenv("EDITOR")))
  79         editor = "vi"; /* this program was created in emacs, but alas.. */
  80     wr = my_shquote(editor, shcmd) + 1;
  81     strcat(shcmd, " ");
  82     my_shquote(fname, shcmd + wr);
  83     fprintf(stderr, "called: %s\n", shcmd);
  84     system(shcmd);
  85     }
/* */
root/diary/editor.c

DEFINITIONS
