usr.bin/indent/args.c

   1 /*
   2  * Copyright (c) 1985 Sun Microsystems, Inc.
   3  * Copyright (c) 1980, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * @(#)args.c   8.1 (Berkeley) 6/6/93
  36  * $FreeBSD: src/usr.bin/indent/args.c,v 1.3.2.3 2001/12/06 19:28:47 schweikh Exp $
  37  * $DragonFly: src/usr.bin/indent/args.c,v 1.3 2005/04/10 20:55:38 drhodus Exp $
  38  */
  39
  40 /*
  41  * Argument scanning and profile reading code.  Default parameters are set
  42  * here as well.
  43  */
  44
  45 #include <ctype.h>
  46 #include <err.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include "indent_globs.h"
  51 #include "indent.h"
  52
  53 /* profile types */
  54 #define PRO_SPECIAL     1       /* special case */
  55 #define PRO_BOOL        2       /* boolean */
  56 #define PRO_INT         3       /* integer */
  57 #define PRO_FONT        4       /* troff font */
  58
  59 /* profile specials for booleans */
  60 #define ON              1       /* turn it on */
  61 #define OFF             0       /* turn it off */
  62
  63 /* profile specials for specials */
  64 #define IGN             1       /* ignore it */
  65 #define CLI             2       /* case label indent (float) */
  66 #define STDIN           3       /* use stdin */
  67 #define KEY             4       /* type (keyword) */
  68
  69 static void scan_profile(FILE *);
  70
  71 char *option_source = "?";
  72
  73 /*
  74  * N.B.: because of the way the table here is scanned, options whose names are
  75  * substrings of other options must occur later; that is, with -lp vs -l, -lp
  76  * must be first.  Also, while (most) booleans occur more than once, the last
  77  * default value is the one actually assigned.
  78  */
  79 struct pro {
  80     char       *p_name;         /* name, eg -bl, -cli */
  81     int         p_type;         /* type (int, bool, special) */
  82     int         p_default;      /* the default value (if int) */
  83     int         p_special;      /* depends on type */
  84     int        *p_obj;          /* the associated variable */
  85 }           pro[] = {
  86
  87     {"T", PRO_SPECIAL, 0, KEY, 0},
  88     {"bacc", PRO_BOOL, false, ON, &blanklines_around_conditional_compilation},
  89     {"badp", PRO_BOOL, false, ON, &blanklines_after_declarations_at_proctop},
  90     {"bad", PRO_BOOL, false, ON, &blanklines_after_declarations},
  91     {"bap", PRO_BOOL, false, ON, &blanklines_after_procs},
  92     {"bbb", PRO_BOOL, false, ON, &blanklines_before_blockcomments},
  93     {"bc", PRO_BOOL, true, OFF, &ps.leave_comma},
  94     {"bl", PRO_BOOL, true, OFF, &btype_2},
  95     {"br", PRO_BOOL, true, ON, &btype_2},
  96     {"bs", PRO_BOOL, false, ON, &Bill_Shannon},
  97     {"cdb", PRO_BOOL, true, ON, &comment_delimiter_on_blankline},
  98     {"cd", PRO_INT, 0, 0, &ps.decl_com_ind},
  99     {"ce", PRO_BOOL, true, ON, &cuddle_else},
 100     {"ci", PRO_INT, 0, 0, &continuation_indent},
 101     {"cli", PRO_SPECIAL, 0, CLI, 0},
 102     {"c", PRO_INT, 33, 0, &ps.com_ind},
 103     {"di", PRO_INT, 16, 0, &ps.decl_indent},
 104     {"dj", PRO_BOOL, false, ON, &ps.ljust_decl},
 105     {"d", PRO_INT, 0, 0, &ps.unindent_displace},
 106     {"eei", PRO_BOOL, false, ON, &extra_expression_indent},
 107     {"ei", PRO_BOOL, true, ON, &ps.else_if},
 108     {"fbc", PRO_FONT, 0, 0, (int *) &blkcomf},
 109     {"fbx", PRO_FONT, 0, 0, (int *) &boxcomf},
 110     {"fb", PRO_FONT, 0, 0, (int *) &bodyf},
 111     {"fc1", PRO_BOOL, true, ON, &format_col1_comments},
 112     {"fcb", PRO_BOOL, true, ON, &format_block_comments},
 113     {"fc", PRO_FONT, 0, 0, (int *) &scomf},
 114     {"fk", PRO_FONT, 0, 0, (int *) &keywordf},
 115     {"fs", PRO_FONT, 0, 0, (int *) &stringf},
 116     {"ip", PRO_BOOL, true, ON, &ps.indent_parameters},
 117     {"i", PRO_INT, 8, 0, &ps.ind_size},
 118     {"lc", PRO_INT, 0, 0, &block_comment_max_col},
 119     {"lp", PRO_BOOL, true, ON, &lineup_to_parens},
 120     {"l", PRO_INT, 78, 0, &max_col},
 121     {"nbacc", PRO_BOOL, false, OFF, &blanklines_around_conditional_compilation},
 122     {"nbadp", PRO_BOOL, false, OFF, &blanklines_after_declarations_at_proctop},
 123     {"nbad", PRO_BOOL, false, OFF, &blanklines_after_declarations},
 124     {"nbap", PRO_BOOL, false, OFF, &blanklines_after_procs},
 125     {"nbbb", PRO_BOOL, false, OFF, &blanklines_before_blockcomments},
 126     {"nbc", PRO_BOOL, true, ON, &ps.leave_comma},
 127     {"nbs", PRO_BOOL, false, OFF, &Bill_Shannon},
 128     {"ncdb", PRO_BOOL, true, OFF, &comment_delimiter_on_blankline},
 129     {"nce", PRO_BOOL, true, OFF, &cuddle_else},
 130     {"ndj", PRO_BOOL, false, OFF, &ps.ljust_decl},
 131     {"neei", PRO_BOOL, false, OFF, &extra_expression_indent},
 132     {"nei", PRO_BOOL, true, OFF, &ps.else_if},
 133     {"nfc1", PRO_BOOL, true, OFF, &format_col1_comments},
 134     {"nfcb", PRO_BOOL, true, OFF, &format_block_comments},
 135     {"nip", PRO_BOOL, true, OFF, &ps.indent_parameters},
 136     {"nlp", PRO_BOOL, true, OFF, &lineup_to_parens},
 137     {"npcs", PRO_BOOL, false, OFF, &proc_calls_space},
 138     {"npro", PRO_SPECIAL, 0, IGN, 0},
 139     {"npsl", PRO_BOOL, true, OFF, &procnames_start_line},
 140     {"nps", PRO_BOOL, false, OFF, &pointer_as_binop},
 141     {"nsc", PRO_BOOL, true, OFF, &star_comment_cont},
 142     {"nsob", PRO_BOOL, false, OFF, &swallow_optional_blanklines},
 143     {"nv", PRO_BOOL, false, OFF, &verbose},
 144     {"pcs", PRO_BOOL, false, ON, &proc_calls_space},
 145     {"psl", PRO_BOOL, true, ON, &procnames_start_line},
 146     {"ps", PRO_BOOL, false, ON, &pointer_as_binop},
 147     {"sc", PRO_BOOL, true, ON, &star_comment_cont},
 148     {"sob", PRO_BOOL, false, ON, &swallow_optional_blanklines},
 149     {"st", PRO_SPECIAL, 0, STDIN, 0},
 150     {"troff", PRO_BOOL, false, ON, &troff},
 151     {"v", PRO_BOOL, false, ON, &verbose},
 152     /* whew! */
 153     {0, 0, 0, 0, 0}
 154 };
 155
 156 /*
 157  * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments
 158  * given in these files.
 159  */
 160 void
 161 set_profile(void)
 162 {
 163     FILE *f;
 164     char        fname[BUFSIZ];
 165     static char prof[] = ".indent.pro";
 166
 167     sprintf(fname, "%s/%s", getenv("HOME"), prof);
 168     if ((f = fopen(option_source = fname, "r")) != NULL) {
 169         scan_profile(f);
 170         (void) fclose(f);
 171     }
 172     if ((f = fopen(option_source = prof, "r")) != NULL) {
 173         scan_profile(f);
 174         (void) fclose(f);
 175     }
 176     option_source = "Command line";
 177 }
 178
 179 static void
 180 scan_profile(FILE *f)
 181 {
 182     int i;
 183     char *p;
 184     char        buf[BUFSIZ];
 185
 186     while (1) {
 187         for (p = buf; (i = getc(f)) != EOF && (*p = i) > ' '; ++p);
 188         if (p != buf) {
 189             *p++ = 0;
 190             if (verbose)
 191                 printf("profile: %s\n", buf);
 192             set_option(buf);
 193         }
 194         else if (i == EOF)
 195             return;
 196     }
 197 }
 198
 199 char    *param_start;
 200
 201 static int
 202 eqin(char *s1, char *s2)
 203 {
 204     while (*s1) {
 205         if (*s1++ != *s2++)
 206             return (false);
 207     }
 208     param_start = s2;
 209     return (true);
 210 }
 211
 212 /*
 213  * Set the defaults.
 214  */
 215 void
 216 set_defaults(void)
 217 {
 218     struct pro *p;
 219
 220     /*
 221      * Because ps.case_indent is a float, we can't initialize it from the
 222      * table:
 223      */
 224     ps.case_indent = 0.0;       /* -cli0.0 */
 225     for (p = pro; p->p_name; p++)
 226         if (p->p_type != PRO_SPECIAL && p->p_type != PRO_FONT)
 227             *p->p_obj = p->p_default;
 228 }
 229
 230 void
 231 set_option(char *arg)
 232 {
 233     struct pro *p;
 234
 235     arg++;                      /* ignore leading "-" */
 236     for (p = pro; p->p_name; p++)
 237         if (*p->p_name == *arg && eqin(p->p_name, arg))
 238             goto found;
 239     errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1);
 240 found:
 241     switch (p->p_type) {
 242
 243     case PRO_SPECIAL:
 244         switch (p->p_special) {
 245
 246         case IGN:
 247             break;
 248
 249         case CLI:
 250             if (*param_start == 0)
 251                 goto need_param;
 252             ps.case_indent = atof(param_start);
 253             break;
 254
 255         case STDIN:
 256             if (input == 0)
 257                 input = stdin;
 258             if (output == 0)
 259                 output = stdout;
 260             break;
 261
 262         case KEY:
 263             if (*param_start == 0)
 264                 goto need_param;
 265             {
 266                 char *str = (char *) malloc(strlen(param_start) + 1);
 267                 strcpy(str, param_start);
 268                 addkey(str, 4);
 269             }
 270             break;
 271
 272         default:
 273             errx(1, "set_option: internal error: p_special %d", p->p_special);
 274         }
 275         break;
 276
 277     case PRO_BOOL:
 278         if (p->p_special == OFF)
 279             *p->p_obj = false;
 280         else
 281             *p->p_obj = true;
 282         break;
 283
 284     case PRO_INT:
 285         if (!isdigit(*param_start)) {
 286     need_param:
 287             errx(1, "%s: ``%s'' requires a parameter", option_source, arg - 1);
 288         }
 289         *p->p_obj = atoi(param_start);
 290         break;
 291
 292     case PRO_FONT:
 293         parsefont((struct fstate *) p->p_obj, param_start);
 294         break;
 295
 296     default:
 297         errx(1, "set_option: internal error: p_type %d", p->p_type);
 298     }
 299 }