args.c

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/*-
 * Copyright (c) 1985 Sun Microsystems, Inc.
 * Copyright (c) 1980, 1993
 *  The Regents of the University of California.  All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
 
#if 0
#ifndef lint
static char sccsid[] = "@(#)args.c  8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#endif
 
#include "c.h"
 
/*
 * Argument scanning and profile reading code.  Default parameters are set
 * here as well.
 */
 
#include <ctype.h>
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "indent_globs.h"
#include "indent.h"
 
#define INDENT_VERSION  "2.1.2"
 
/* profile types */
#define PRO_SPECIAL 1   /* special case */
#define PRO_BOOL    2   /* boolean */
#define PRO_INT     3   /* integer */
 
/* profile specials for booleans */
#define ON      1   /* turn it on */
#define OFF     0   /* turn it off */
 
/* profile specials for specials */
#define IGN     1   /* ignore it */
#define CLI     2   /* case label indent (float) */
#define STDIN       3   /* use stdin */
#define KEY     4   /* type (keyword) */
 
static void scan_profile(FILE *f);
 
#define KEY_FILE        5   /* only used for args */
#define VERSION         6   /* only used for args */
 
const char *option_source = "?";
 
void add_typedefs_from_file(const char *str);
 
/*
 * N.B.: because of the way the table here is scanned, options whose names are
 * substrings of other options must occur later; that is, with -lp vs -l, -lp
 * must be first.  Also, while (most) booleans occur more than once, the last
 * default value is the one actually assigned.
 */
struct pro {
    const char *p_name;     /* name, e.g. -bl, -cli */
    int         p_type;     /* type (int, bool, special) */
    int         p_default;  /* the default value (if int) */
    int         p_special;  /* depends on type */
    int        *p_obj;      /* the associated variable */
}           pro[] = {
 
    {"T", PRO_SPECIAL, 0, KEY, 0},
    {"U", PRO_SPECIAL, 0, KEY_FILE, 0},
    {"-version", PRO_SPECIAL, 0, VERSION, 0},
    {"P", PRO_SPECIAL, 0, IGN, 0},
    {"bacc", PRO_BOOL, false, ON, &blanklines_around_conditional_compilation},
    {"badp", PRO_BOOL, false, ON, &blanklines_after_declarations_at_proctop},
    {"bad", PRO_BOOL, false, ON, &blanklines_after_declarations},
    {"bap", PRO_BOOL, false, ON, &blanklines_after_procs},
    {"bbb", PRO_BOOL, false, ON, &blanklines_before_blockcomments},
    {"bc", PRO_BOOL, true, OFF, &ps.leave_comma},
    {"bl", PRO_BOOL, true, OFF, &btype_2},
    {"br", PRO_BOOL, true, ON, &btype_2},
    {"bs", PRO_BOOL, false, ON, &Bill_Shannon},
    {"cdb", PRO_BOOL, true, ON, &comment_delimiter_on_blankline},
    {"cd", PRO_INT, 0, 0, &ps.decl_com_ind},
    {"ce", PRO_BOOL, true, ON, &cuddle_else},
    {"ci", PRO_INT, 0, 0, &continuation_indent},
    {"cli", PRO_SPECIAL, 0, CLI, 0},
    {"cp", PRO_INT, 0, 0, &else_endif_com_ind},
    {"c", PRO_INT, 33, 0, &ps.com_ind},
    {"di", PRO_INT, 16, 0, &ps.decl_indent},
    {"dj", PRO_BOOL, false, ON, &ps.ljust_decl},
    {"d", PRO_INT, 0, 0, &ps.unindent_displace},
    {"eei", PRO_BOOL, false, ON, &extra_expression_indent},
    {"ei", PRO_BOOL, true, ON, &ps.else_if},
    {"fbs", PRO_BOOL, true, ON, &function_brace_split},
    {"fc1", PRO_BOOL, true, ON, &format_col1_comments},
    {"fcb", PRO_BOOL, true, ON, &format_block_comments},
    {"ip", PRO_BOOL, true, ON, &ps.indent_parameters},
    {"i", PRO_INT, 8, 0, &ps.ind_size},
    {"lc", PRO_INT, 0, 0, &block_comment_max_col},
    {"ldi", PRO_INT, -1, 0, &ps.local_decl_indent},
    {"lpl", PRO_BOOL, false, ON, &lineup_to_parens_always},
    {"lp", PRO_BOOL, true, ON, &lineup_to_parens},
    {"l", PRO_INT, 78, 0, &max_col},
    {"nbacc", PRO_BOOL, false, OFF, &blanklines_around_conditional_compilation},
    {"nbadp", PRO_BOOL, false, OFF, &blanklines_after_declarations_at_proctop},
    {"nbad", PRO_BOOL, false, OFF, &blanklines_after_declarations},
    {"nbap", PRO_BOOL, false, OFF, &blanklines_after_procs},
    {"nbbb", PRO_BOOL, false, OFF, &blanklines_before_blockcomments},
    {"nbc", PRO_BOOL, true, ON, &ps.leave_comma},
    {"nbs", PRO_BOOL, false, OFF, &Bill_Shannon},
    {"ncdb", PRO_BOOL, true, OFF, &comment_delimiter_on_blankline},
    {"nce", PRO_BOOL, true, OFF, &cuddle_else},
    {"ndj", PRO_BOOL, false, OFF, &ps.ljust_decl},
    {"neei", PRO_BOOL, false, OFF, &extra_expression_indent},
    {"nei", PRO_BOOL, true, OFF, &ps.else_if},
    {"nfbs", PRO_BOOL, true, OFF, &function_brace_split},
    {"nfc1", PRO_BOOL, true, OFF, &format_col1_comments},
    {"nfcb", PRO_BOOL, true, OFF, &format_block_comments},
    {"nip", PRO_BOOL, true, OFF, &ps.indent_parameters},
    {"nlpl", PRO_BOOL, false, OFF, &lineup_to_parens_always},
    {"nlp", PRO_BOOL, true, OFF, &lineup_to_parens},
    {"npcs", PRO_BOOL, false, OFF, &proc_calls_space},
    {"npro", PRO_SPECIAL, 0, IGN, 0},
    {"npsl", PRO_BOOL, true, OFF, &procnames_start_line},
    {"nsac", PRO_BOOL, false, OFF, &space_after_cast},
    {"nsc", PRO_BOOL, true, OFF, &star_comment_cont},
    {"nsob", PRO_BOOL, false, OFF, &swallow_optional_blanklines},
    {"ntpg", PRO_BOOL, false, OFF, &postgres_tab_rules},
    {"nut", PRO_BOOL, true, OFF, &use_tabs},
    {"nv", PRO_BOOL, false, OFF, &verbose},
    {"pcs", PRO_BOOL, false, ON, &proc_calls_space},
    {"psl", PRO_BOOL, true, ON, &procnames_start_line},
    {"sac", PRO_BOOL, false, ON, &space_after_cast},
    {"sc", PRO_BOOL, true, ON, &star_comment_cont},
    {"sob", PRO_BOOL, false, ON, &swallow_optional_blanklines},
    {"st", PRO_SPECIAL, 0, STDIN, 0},
    {"ta", PRO_BOOL, false, ON, &auto_typedefs},
    {"tpg", PRO_BOOL, false, ON, &postgres_tab_rules},
    {"ts", PRO_INT, 8, 0, &tabsize},
    {"ut", PRO_BOOL, true, ON, &use_tabs},
    {"v", PRO_BOOL, false, ON, &verbose},
    /* whew! */
    {0, 0, 0, 0, 0}
};
 
/*
 * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments
 * given in these files.
 */
void
set_profile(const char *profile_name)
{
    FILE *f;
    char fname[MAXPGPATH];
    static char prof[] = ".indent.pro";
 
    if (profile_name == NULL)
    snprintf(fname, sizeof(fname), "%s/%s", getenv("HOME"), prof);
    else
    snprintf(fname, sizeof(fname), "%s", profile_name + 2);
    if ((f = fopen(option_source = fname, "r")) != NULL) {
    scan_profile(f);
    (void) fclose(f);
    }
    if ((f = fopen(option_source = prof, "r")) != NULL) {
    scan_profile(f);
    (void) fclose(f);
    }
    option_source = "Command line";
}
 
static void
scan_profile(FILE *f)
{
    int     comment, i;
    char    *p;
    char        buf[BUFSIZ];
 
    while (1) {
    p = buf;
    comment = 0;
    while ((i = getc(f)) != EOF) {
        if (i == '*' && !comment && p > buf && p[-1] == '/') {
        comment = p - buf;
        *p++ = i;
        } else if (i == '/' && comment && p > buf && p[-1] == '*') {
        p = buf + comment - 1;
        comment = 0;
        } else if (isspace((unsigned char)i)) {
        if (p > buf && !comment)
            break;
        } else {
        *p++ = i;
        }
    }
    if (p != buf) {
        *p++ = 0;
        if (verbose)
        printf("profile: %s\n", buf);
        set_option(buf);
    }
    else if (i == EOF)
        return;
    }
}
 
static const char *
eqin(const char *s1, const char *s2)
{
    while (*s1) {
    if (*s1++ != *s2++)
        return (NULL);
    }
    return (s2);
}
 
/*
 * Set the defaults.
 */
void
set_defaults(void)
{
    struct pro *p;
 
    /*
     * Because ps.case_indent is a float, we can't initialize it from the
     * table:
     */
    ps.case_indent = 0.0;   /* -cli0.0 */
    for (p = pro; p->p_name; p++)
    if (p->p_type != PRO_SPECIAL)
        *p->p_obj = p->p_default;
}
 
void
set_option(char *arg)
{
    struct  pro *p;
    const char  *param_start;
 
    arg++;          /* ignore leading "-" */
    for (p = pro; p->p_name; p++)
    if (*p->p_name == *arg && (param_start = eqin(p->p_name, arg)) != NULL)
        goto found;
    errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1);
found:
    switch (p->p_type) {
 
    case PRO_SPECIAL:
    switch (p->p_special) {
 
    case IGN:
        break;
 
    case CLI:
        if (*param_start == 0)
        goto need_param;
        ps.case_indent = atof(param_start);
        break;
 
    case STDIN:
        if (input == NULL)
        input = stdin;
        if (output == NULL)
        output = stdout;
        break;
 
    case KEY:
        if (*param_start == 0)
        goto need_param;
        add_typename(param_start);
        break;
 
    case KEY_FILE:
        if (*param_start == 0)
        goto need_param;
        add_typedefs_from_file(param_start);
        break;
 
    case VERSION:
        printf("pg_bsd_indent %s (based on FreeBSD indent)\n", INDENT_VERSION);
        exit(0);
 
    default:
        errx(1, "set_option: internal error: p_special %d", p->p_special);
    }
    break;
 
    case PRO_BOOL:
    if (p->p_special == OFF)
        *p->p_obj = false;
    else
        *p->p_obj = true;
    break;
 
    case PRO_INT:
    if (!isdigit((unsigned char)*param_start)) {
    need_param:
        errx(1, "%s: ``%s'' requires a parameter", option_source, p->p_name);
    }
    *p->p_obj = atoi(param_start);
    break;
 
    default:
    errx(1, "set_option: internal error: p_type %d", p->p_type);
    }
}
 
void
add_typedefs_from_file(const char *str)
{
    FILE *file;
    char line[BUFSIZ];
 
    if ((file = fopen(str, "r")) == NULL) {
    fprintf(stderr, "indent: cannot open file %s\n", str);
    exit(1);
    }
    while ((fgets(line, BUFSIZ, file)) != NULL) {
    /* Remove trailing whitespace */
    line[strcspn(line, " \t\n\r")] = '\0';
    add_typename(line);
    }
    fclose(file);
}