commands/indent/args.c

   1 /**
   2  * Copyright (c) 1985 Sun Microsystems, Inc.
   3  * Copyright (c) 1980 The Regents of the University of California.
   4  * Copyright (c) 1976 Board of Trustees of the University of Illinois.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms are permitted
   8  * provided that the above copyright notice and this paragraph are
   9  * duplicated in all such forms and that any documentation,
  10  * advertising materials, and other materials related to such
  11  * distribution and use acknowledge that the software was developed
  12  * by the University of California, Berkeley, the University of Illinois,
  13  * Urbana, and Sun Microsystems, Inc.  The name of either University
  14  * or Sun Microsystems may not be used to endorse or promote products
  15  * derived from this software without specific prior written permission.
  16  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  18  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  19  */
  20
  21 /*
  22  * Argument scanning and profile reading code.  Default parameters are set
  23  * here as well.
  24  */
  25
  26 #define PUBLIC extern
  27 #include <sys/types.h>
  28 #include <ctype.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include "globs.h"
  32 #include "proto.h"
  33
  34 /* profile types */
  35 #define PRO_SPECIAL     1               /* special case */
  36 #define PRO_BOOL        2               /* boolean */
  37 #define PRO_INT         3               /* integer */
  38 #define PRO_FONT        4               /* troff font */
  39
  40 /* profile specials for booleans */
  41 #define ON              1               /* turn it on */
  42 #define OFF             0               /* turn it off */
  43
  44 /* profile specials for specials */
  45 #define IGN             1               /* ignore it */
  46 #define CLI             2               /* case label indent (float) */
  47 #define STDIN           3               /* use stdin */
  48 #define KEY             4               /* type (keyword) */
  49
  50 /*
  51  * N.B.: because of the way the table here is scanned, options whose names
  52  * are substrings of other options must occur later; that is, with -lp vs -l,
  53  * -lp must be first.  Also, while (most) booleans occur more than once, the
  54  * last default value is the one actually assigned.
  55  */
  56 struct pro
  57 {
  58    char           *p_name;              /* name, eg -bl, -cli */
  59    int             p_type;              /* type (int, bool, special) */
  60    int             p_default;           /* the default value (if int) */
  61    int             p_special;           /* depends on type */
  62    int            *p_obj;               /* the associated variable */
  63 }               pro[] =
  64
  65 {
  66
  67    "T", PRO_SPECIAL, 0, KEY, 0,
  68    "bacc", PRO_BOOL, false, ON, &bl_around,
  69    "badp", PRO_BOOL, false, ON, &bl_at_proctop,
  70    "bad", PRO_BOOL, false, ON, &bl_aft_decl,
  71    "bap", PRO_BOOL, false, ON, &bl_a_procs,
  72    "bbb", PRO_BOOL, false, ON, &bl_bef_bk,
  73    "bc", PRO_BOOL, true, OFF, &ps.leave_comma,
  74    "bl", PRO_BOOL, true, OFF, &btype_2,
  75    "br", PRO_BOOL, true, ON, &btype_2,
  76    "bs", PRO_BOOL, false, ON, &Bill_Shannon,
  77    "cdb", PRO_BOOL, true, ON, &del_on_bl,
  78    "cd", PRO_INT, 0, 0, &ps.decl_com_ind,
  79    "ce", PRO_BOOL, true, ON, &cuddle_else,
  80    "ci", PRO_INT, 0, 0, &continuation_indent,
  81    "cli", PRO_SPECIAL, 0, CLI, 0,
  82    "c", PRO_INT, 33, 0, &ps.com_ind,
  83    "di", PRO_INT, 16, 0, &ps.decl_indent,
  84    "dj", PRO_BOOL, false, ON, &ps.ljust_decl,
  85    "d", PRO_INT, 0, 0, &ps.unindent_displace,
  86    "eei", PRO_BOOL, false, ON, &ex_expr_indent,
  87    "ei", PRO_BOOL, true, ON, &ps.else_if,
  88    "fbc", PRO_FONT, 0, 0, (int *) &blkcomf,
  89    "fbx", PRO_FONT, 0, 0, (int *) &boxcomf,
  90    "fb", PRO_FONT, 0, 0, (int *) &bodyf,
  91    "fc1", PRO_BOOL, true, ON, &format_col1_comments,
  92    "fc", PRO_FONT, 0, 0, (int *) &scomf,
  93    "fk", PRO_FONT, 0, 0, (int *) &keywordf,
  94    "fs", PRO_FONT, 0, 0, (int *) &stringf,
  95    "ip", PRO_BOOL, true, ON, &ps.indent_parameters,
  96    "i", PRO_INT, 8, 0, &ps.ind_size,
  97    "lc", PRO_INT, 0, 0, &bk_max_col,
  98    "lp", PRO_BOOL, true, ON, &lineup_to_parens,
  99    "l", PRO_INT, 78, 0, &max_col,
 100    "nbacc", PRO_BOOL, false, OFF, &bl_around,
 101    "nbadp", PRO_BOOL, false, OFF, &bl_at_proctop,
 102    "nbad", PRO_BOOL, false, OFF, &bl_aft_decl,
 103    "nbap", PRO_BOOL, false, OFF, &bl_a_procs,
 104    "nbbb", PRO_BOOL, false, OFF, &bl_bef_bk,
 105    "nbc", PRO_BOOL, true, ON, &ps.leave_comma,
 106    "nbs", PRO_BOOL, false, OFF, &Bill_Shannon,
 107    "ncdb", PRO_BOOL, true, OFF, &del_on_bl,
 108    "nce", PRO_BOOL, true, OFF, &cuddle_else,
 109    "ndj", PRO_BOOL, false, OFF, &ps.ljust_decl,
 110    "neei", PRO_BOOL, false, OFF, &ex_expr_indent,
 111    "nei", PRO_BOOL, true, OFF, &ps.else_if,
 112    "nfc1", PRO_BOOL, true, OFF, &format_col1_comments,
 113    "nip", PRO_BOOL, true, OFF, &ps.indent_parameters,
 114    "nlp", PRO_BOOL, true, OFF, &lineup_to_parens,
 115    "npcs", PRO_BOOL, false, OFF, &proc_calls_space,
 116    "npro", PRO_SPECIAL, 0, IGN, 0,
 117    "npsl", PRO_BOOL, true, OFF, &proc_str_line,
 118    "nps", PRO_BOOL, false, OFF, &ptr_binop,
 119    "nsc", PRO_BOOL, true, OFF, &star_comment_cont,
 120    "nsob", PRO_BOOL, false, OFF, &swallow_opt_bl,
 121    "nv", PRO_BOOL, false, OFF, &verbose,
 122    "pcs", PRO_BOOL, false, ON, &proc_calls_space,
 123    "psl", PRO_BOOL, true, ON, &proc_str_line,
 124    "ps", PRO_BOOL, false, ON, &ptr_binop,
 125    "sc", PRO_BOOL, true, ON, &star_comment_cont,
 126    "sob", PRO_BOOL, false, ON, &swallow_opt_bl,
 127    "st", PRO_SPECIAL, 0, STDIN, 0,
 128    "troff", PRO_BOOL, false, ON, &troff,
 129    "v", PRO_BOOL, false, ON, &verbose,
 130    /* whew! */
 131    0, 0, 0, 0, 0
 132 };
 133
 134 /*
 135  * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles
 136  * arguments given in these files.
 137  */
 138 void set_profile()
 139 {
 140    register FILE  *f;
 141    char            fname[BUFSIZ];
 142    static char     prof[] = ".indent.pro";
 143
 144    sprintf(fname, "%s/%s", getenv("HOME"), prof);
 145    if ((f = fopen(fname, "r")) != NULL)
 146    {
 147       scan_profile(f);
 148       (void) fclose(f);
 149    }
 150    if ((f = fopen(prof, "r")) != NULL)
 151    {
 152       scan_profile(f);
 153       (void) fclose(f);
 154    }
 155 }
 156
 157 void scan_profile(f)
 158    register FILE  *f;
 159 {
 160    register int    i;
 161    register char  *p;
 162    char            buf[BUFSIZ];
 163
 164    while (1)
 165    {
 166       for (p = buf; (i = getc(f)) != EOF && (*p = (char)i) > ' '; ++p);
 167       if (p != buf)
 168       {
 169          *p++ = 0;
 170          if (verbose)
 171             printf("profile: %s\n", buf);
 172          set_option(buf);
 173       } else if (i == EOF)
 174          return;
 175    }
 176 }
 177
 178 char           *param_start;
 179
 180 int eqin(s1, s2)
 181    register char  *s1;
 182    register char  *s2;
 183 {
 184    while (*s1)
 185    {
 186       if (*s1++ != *s2++)
 187          return (false);
 188    }
 189    param_start = s2;
 190    return (true);
 191 }
 192
 193 /*
 194  * Set the defaults.
 195  */
 196 void set_defaults()
 197 {
 198    register struct pro *p;
 199
 200    /* Because ps.case_indent is a float, we can't initialize it from
 201       the table: */
 202    ps.case_indent = 0;                  /* -cli0.0 */
 203    for (p = pro; p->p_name; p++)
 204       if (p->p_type != PRO_SPECIAL && p->p_type != PRO_FONT)
 205          *p->p_obj = p->p_default;
 206 }
 207
 208 void set_option(arg)
 209    register char  *arg;
 210 {
 211    register struct pro *p;
 212
 213    arg++;                               /* ignore leading "-" */
 214    for (p = pro; p->p_name; p++)
 215       if (*p->p_name == *arg && eqin(p->p_name, arg))
 216          goto found;
 217    fprintf(stderr, "indent: unknown parameter \"%s\"\n", arg - 1);
 218    exit(1);
 219 found:
 220    switch (p->p_type)
 221    {
 222
 223    case PRO_SPECIAL:
 224       switch (p->p_special)
 225       {
 226
 227       case IGN:
 228          break;
 229
 230       case CLI:
 231          if (*param_start == 0)
 232             goto need_param;
 233          ps.case_indent = atoi(param_start);
 234          break;
 235
 236       case STDIN:
 237          if (input == 0)
 238             input = stdin;
 239          if (output == 0)
 240             output = stdout;
 241          break;
 242
 243       case KEY:
 244          if (*param_start == 0)
 245             goto need_param;
 246          {
 247             register char  *str = (char *) malloc(strlen(param_start) + 1);
 248             strcpy(str, param_start);
 249             addkey(str, 4);
 250          }
 251          break;
 252
 253       default:
 254          fprintf(stderr, "\
 255 indent: set_option: internal error: p_special %d\n", p->p_special);
 256          exit(1);
 257       }
 258       break;
 259
 260    case PRO_BOOL:
 261       if (p->p_special == OFF)
 262          *p->p_obj = false;
 263       else
 264          *p->p_obj = true;
 265       break;
 266
 267    case PRO_INT:
 268       if (*param_start == 0)
 269       {
 270    need_param:
 271          fprintf(stderr, "indent: ``%s'' requires a parameter\n",
 272                  arg - 1);
 273          exit(1);
 274       }
 275       *p->p_obj = atoi(param_start);
 276       break;
 277
 278    case PRO_FONT:
 279       parsefont((struct fstate *) p->p_obj, param_start);
 280       break;
 281
 282    default:
 283       fprintf(stderr, "indent: set_option: internal error: p_type %d\n",
 284               p->p_type);
 285       exit(1);
 286    }
 287 }