743 lines
21 KiB
C
743 lines
21 KiB
C
/* $NetBSD: defun.c,v 1.1.1.3 2003/07/03 14:58:53 wiz Exp $ */
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/* defun.c -- @defun and friends.
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Id: defun.c,v 1.6 2003/05/09 23:51:10 karl Exp
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software
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Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "system.h"
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#include "defun.h"
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#include "xml.h"
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#include "insertion.h"
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#include "makeinfo.h"
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#include "cmds.h"
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#include "html.h"
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#define DEFUN_SELF_DELIMITING(c) \
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((c) == '(' || (c) == ')' || (c) == '[' || (c) == ']')
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struct token_accumulator
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{
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unsigned int length;
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unsigned int index;
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char **tokens;
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};
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static void
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initialize_token_accumulator (accumulator)
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struct token_accumulator *accumulator;
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{
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accumulator->length = 0;
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accumulator->index = 0;
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accumulator->tokens = NULL;
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}
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static void
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accumulate_token (accumulator, token)
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struct token_accumulator *accumulator;
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char *token;
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{
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if (accumulator->index >= accumulator->length)
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{
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accumulator->length += 10;
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accumulator->tokens = xrealloc (accumulator->tokens,
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(accumulator->length * sizeof (char *)));
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}
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accumulator->tokens[accumulator->index] = token;
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accumulator->index += 1;
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}
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/* Given STRING_POINTER pointing at an open brace, skip forward and return a
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pointer to just past the matching close brace. */
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static int
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scan_group_in_string (string_pointer)
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char **string_pointer;
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{
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char *scan_string = (*string_pointer) + 1;
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unsigned int level = 1;
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int started_command = 0;
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for (;;)
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{
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int c;
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if (level == 0)
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{
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*string_pointer = scan_string;
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return 1;
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}
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c = *scan_string++;
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if (c == 0)
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{
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/* Tweak line_number to compensate for fact that
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we gobbled the whole line before coming here. */
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line_number--;
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line_error (_("Missing `}' in @def arg"));
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line_number++;
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*string_pointer = scan_string - 1;
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return 0;
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}
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if (c == '{' && !started_command)
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level++;
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if (c == '}' && !started_command)
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level--;
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/* remember if at @. */
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started_command = (c == '@' && !started_command);
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}
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}
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/* Return a list of tokens from the contents of STRING.
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Commands and brace-delimited groups count as single tokens.
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Contiguous whitespace characters are converted to a token
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consisting of a single space. */
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static char **
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args_from_string (string)
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char *string;
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{
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struct token_accumulator accumulator;
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char *token_start, *token_end;
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char *scan_string = string;
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initialize_token_accumulator (&accumulator);
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while (*scan_string)
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{ /* Replace arbitrary whitespace by a single space. */
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if (whitespace (*scan_string))
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{
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scan_string += 1;
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while (whitespace (*scan_string))
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scan_string += 1;
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accumulate_token ((&accumulator), (xstrdup (" ")));
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continue;
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}
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/* Commands count as single tokens. */
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if (*scan_string == COMMAND_PREFIX)
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{
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token_start = scan_string;
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scan_string += 1;
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if (self_delimiting (*scan_string))
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scan_string += 1;
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else
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{
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int c;
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while (1)
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{
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c = *scan_string++;
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if ((c == 0) || (c == '{') || (whitespace (c)))
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{
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scan_string -= 1;
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break;
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}
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}
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if (*scan_string == '{')
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{
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char *s = scan_string;
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(void) scan_group_in_string (&s);
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scan_string = s;
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}
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}
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token_end = scan_string;
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}
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/* Parentheses and brackets are self-delimiting. */
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else if (DEFUN_SELF_DELIMITING (*scan_string))
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{
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token_start = scan_string;
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scan_string += 1;
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token_end = scan_string;
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}
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/* Open brace introduces a group that is a single token. */
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else if (*scan_string == '{')
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{
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char *s = scan_string;
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int balanced = scan_group_in_string (&s);
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token_start = scan_string + 1;
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scan_string = s;
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token_end = balanced ? (scan_string - 1) : scan_string;
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}
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/* Otherwise a token is delimited by whitespace, parentheses,
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brackets, or braces. A token is also ended by a command. */
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else
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{
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token_start = scan_string;
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for (;;)
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{
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int c;
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c = *scan_string++;
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/* Do not back up if we're looking at a }; since the only
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valid }'s are those matched with {'s, we want to give
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an error. If we back up, we go into an infinite loop. */
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if (!c || whitespace (c) || DEFUN_SELF_DELIMITING (c)
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|| c == '{')
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{
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scan_string--;
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break;
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}
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/* If we encounter a command embedded within a token,
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then end the token. */
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if (c == COMMAND_PREFIX)
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{
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scan_string--;
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break;
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}
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}
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token_end = scan_string;
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}
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accumulate_token (&accumulator, substring (token_start, token_end));
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}
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accumulate_token (&accumulator, NULL);
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return accumulator.tokens;
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}
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static void
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process_defun_args (defun_args, auto_var_p)
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char **defun_args;
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int auto_var_p;
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{
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int pending_space = 0;
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for (;;)
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{
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char *defun_arg = *defun_args++;
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if (defun_arg == NULL)
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break;
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if (defun_arg[0] == ' ')
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{
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pending_space = 1;
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continue;
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}
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if (pending_space)
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{
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add_char (' ');
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pending_space = 0;
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}
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if (DEFUN_SELF_DELIMITING (defun_arg[0]))
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{
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/* Within @deffn and friends, texinfo.tex makes parentheses
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sans serif and brackets bold. We use roman instead. */
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insert_html_tag (START, "");
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add_char (defun_arg[0]);
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insert_html_tag (END, "");
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}
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else if (defun_arg[0] == '&')
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if (html)
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{
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defun_arg = escape_string (xstrdup (defun_arg));
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add_word (defun_arg);
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free (defun_arg);
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}
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else
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add_word (defun_arg);
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else if (defun_arg[0] == COMMAND_PREFIX)
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execute_string ("%s", defun_arg);
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else if (auto_var_p)
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if (html)
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{
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defun_arg = escape_string (xstrdup (defun_arg));
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add_word (defun_arg);
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free (defun_arg);
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}
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else
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add_word (defun_arg);
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else
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add_word (defun_arg);
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}
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}
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static char *
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next_nonwhite_defun_arg (arg_pointer)
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char ***arg_pointer;
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{
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char **scan = (*arg_pointer);
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char *arg = (*scan++);
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if ((arg != 0) && (*arg == ' '))
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arg = *scan++;
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if (arg == 0)
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scan -= 1;
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*arg_pointer = scan;
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return (arg == 0) ? "" : arg;
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}
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/* This is needed also in insertion.c. */
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enum insertion_type
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get_base_type (type)
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enum insertion_type type;
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{
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enum insertion_type base_type;
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switch (type)
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{
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case defivar: base_type = defcv; break;
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case defmac: base_type = deffn; break;
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case defmethod: base_type = defop; break;
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case defopt: base_type = defvr; break;
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case defspec: base_type = deffn; break;
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case deftypefun: base_type = deftypefn; break;
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case deftypeivar: base_type = deftypeivar; break;
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case deftypemethod: base_type = deftypemethod; break;
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case deftypeop: base_type = deftypeop; break;
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case deftypevar: base_type = deftypevr; break;
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case defun: base_type = deffn; break;
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case defvar: base_type = defvr; break;
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default:
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base_type = type;
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break;
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}
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return base_type;
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}
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/* Make the defun type insertion.
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TYPE says which insertion this is.
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X_P, if nonzero, says not to start a new insertion. */
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static void
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defun_internal (type, x_p)
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enum insertion_type type;
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int x_p;
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{
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enum insertion_type base_type;
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char **defun_args, **scan_args;
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const char *category;
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char *defined_name, *type_name, *type_name2;
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{
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char *line;
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/* The @def.. line is the only place in Texinfo where you are
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allowed to use unquoted braces that don't delimit arguments of
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a command or a macro; in any other place it will trigger an
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error message from the reader loop. The special handling of
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this case inside `args_from_string' is an extra special hack
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which allows this. The side effect is that if we try to expand
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the rest of the line below, the recursive reader loop will
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signal an error if there are brace-delimited arguments on that line.
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The best solution to this would be to change the syntax of
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@def.. commands so that it doesn't violate Texinfo's own rules.
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But it's probably too late for this now, as it will break a lot
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of existing manuals.
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Unfortunately, this means that you can't call macros, use @value, etc.
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inside @def.. commands, sigh. */
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get_rest_of_line (0, &line);
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defun_args = (args_from_string (line));
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free (line);
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}
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scan_args = defun_args;
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/* Get base type and category string. */
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base_type = get_base_type (type);
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/* xx all these const strings should be determined upon
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documentlanguage argument and NOT via gettext (kama). */
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switch (type)
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{
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case defun:
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case deftypefun:
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category = _("Function");
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break;
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case defmac:
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category = _("Macro");
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break;
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case defspec:
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category = _("Special Form");
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break;
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case defvar:
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case deftypevar:
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category = _("Variable");
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break;
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case defopt:
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category = _("User Option");
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break;
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case defivar:
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case deftypeivar:
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category = _("Instance Variable");
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break;
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case defmethod:
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case deftypemethod:
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category = _("Method");
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break;
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default:
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category = next_nonwhite_defun_arg (&scan_args);
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break;
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}
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/* The class name. */
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if ((base_type == deftypefn)
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|| (base_type == deftypevr)
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|| (base_type == defcv)
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|| (base_type == defop)
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|| (base_type == deftypeivar)
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|| (base_type == deftypemethod)
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|| (base_type == deftypeop)
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)
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type_name = next_nonwhite_defun_arg (&scan_args);
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/* The type name for typed languages. */
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if ((base_type == deftypemethod)
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|| (base_type == deftypeivar)
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|| (base_type == deftypeop)
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)
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type_name2 = next_nonwhite_defun_arg (&scan_args);
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/* The function or whatever that's actually being defined. */
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defined_name = next_nonwhite_defun_arg (&scan_args);
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/* This hack exists solely for the purposes of formatting the Texinfo
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manual. I couldn't think of a better way. The token might be a
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simple @@ followed immediately by more text. If this is the case,
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then the next defun arg is part of this one, and we should
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concatenate them. */
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if (*scan_args && **scan_args && !whitespace (**scan_args)
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&& STREQ (defined_name, "@@"))
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{
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char *tem = xmalloc (3 + strlen (scan_args[0]));
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sprintf (tem, "@@%s", scan_args[0]);
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free (scan_args[0]);
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scan_args[0] = tem;
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scan_args++;
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defined_name = tem;
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}
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/* It's easy to write @defun foo(arg1 arg2), but a following ( is
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misparsed by texinfo.tex and this is next to impossible to fix.
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Warn about it. */
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if (*scan_args && **scan_args && **scan_args == '(')
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warning ("`%c' follows defined name `%s' instead of whitespace",
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**scan_args, defined_name);
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if (!x_p)
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begin_insertion (type);
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|
||
/* Write the definition header line.
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This should start at the normal indentation. */
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current_indent -= default_indentation_increment;
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||
start_paragraph ();
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||
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||
if (!x_p) {
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/* Start the definition on new paragraph. */
|
||
if (html)
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||
add_word ("<p>\n");
|
||
}
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||
|
||
if (!html && !docbook)
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case defvr:
|
||
case deftp:
|
||
execute_string (" -- %s: %s", category, defined_name);
|
||
break;
|
||
case deftypefn:
|
||
case deftypevr:
|
||
execute_string (" -- %s: %s %s", category, type_name, defined_name);
|
||
break;
|
||
case defcv:
|
||
execute_string (" -- %s %s %s: %s", category, _("of"), type_name,
|
||
defined_name);
|
||
break;
|
||
case deftypeivar:
|
||
execute_string (" -- %s %s %s: %s %s", category, _("of"), type_name,
|
||
type_name2, defined_name);
|
||
break;
|
||
case defop:
|
||
execute_string (" -- %s %s %s: %s", category, _("on"), type_name,
|
||
defined_name);
|
||
break;
|
||
case deftypeop:
|
||
execute_string (" -- %s %s %s: %s %s", category, _("on"), type_name,
|
||
type_name2, defined_name);
|
||
break;
|
||
case deftypemethod:
|
||
execute_string (" -- %s %s %s: %s %s", category, _("on"), type_name,
|
||
type_name2, defined_name);
|
||
break;
|
||
}
|
||
|
||
if (html)
|
||
{
|
||
/* If this is not a @def...x version, it could only
|
||
be a normal version @def.... So start the table here. */
|
||
if (!x_p)
|
||
{
|
||
add_html_elt ("<table width=");
|
||
add_word ("\"100%\">\n");
|
||
}
|
||
|
||
/* If this is an @def...x there has to be an other @def... before
|
||
it, so this is only a new row within an existing table. With
|
||
two complete standalone tables the gap between them is too big. */
|
||
add_word ("<tr>\n");
|
||
add_html_elt ("<td align=\"left\">");
|
||
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case defvr:
|
||
case deftp:
|
||
/* <i> is for the following function arguments. */
|
||
insert_html_tag (START, "b");
|
||
execute_string ("%s", defined_name);
|
||
insert_html_tag (END, "b");
|
||
insert_html_tag (START, "i");
|
||
break;
|
||
case deftypefn:
|
||
case deftypevr:
|
||
execute_string ("%s ", type_name);
|
||
insert_html_tag (START, "b");
|
||
execute_string ("%s", defined_name);
|
||
insert_html_tag (END, "b");
|
||
insert_html_tag (START, "i");
|
||
break;
|
||
case defcv:
|
||
case defop:
|
||
insert_html_tag (START, "b");
|
||
execute_string ("%s", defined_name);
|
||
insert_html_tag (END, "b");
|
||
insert_html_tag (START, "i");
|
||
break;
|
||
case deftypemethod:
|
||
case deftypeop:
|
||
case deftypeivar:
|
||
execute_string ("%s ", type_name2);
|
||
insert_html_tag (START, "b");
|
||
execute_string ("%s", defined_name);
|
||
insert_html_tag (END, "b");
|
||
insert_html_tag (START, "i");
|
||
break;
|
||
}
|
||
} /* if (html)... */
|
||
|
||
if (docbook)
|
||
{
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case defvr:
|
||
case deftp:
|
||
case defcv:
|
||
case defop:
|
||
xml_insert_element (FUNCTION, START);
|
||
execute_string ("%s", defined_name);
|
||
xml_insert_element (FUNCTION, END);
|
||
break;
|
||
case deftypefn:
|
||
case deftypevr:
|
||
execute_string ("%s ", type_name);
|
||
xml_insert_element (FUNCTION, START);
|
||
execute_string ("%s", defined_name);
|
||
xml_insert_element (FUNCTION, END);
|
||
break;
|
||
case deftypemethod:
|
||
case deftypeop:
|
||
case deftypeivar:
|
||
execute_string ("%s ", type_name2);
|
||
xml_insert_element (FUNCTION, START);
|
||
execute_string ("%s", defined_name);
|
||
xml_insert_element (FUNCTION, END);
|
||
break;
|
||
}
|
||
|
||
} /* if (docbook)... */
|
||
|
||
current_indent += default_indentation_increment;
|
||
|
||
/* Now process the function arguments, if any. If these carry onto
|
||
the next line, they should be indented by two increments to
|
||
distinguish them from the body of the definition, which is indented
|
||
by one increment. */
|
||
current_indent += default_indentation_increment;
|
||
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case defop:
|
||
process_defun_args (scan_args, 1);
|
||
break;
|
||
|
||
/* Through Makeinfo 1.67 we processed remaining args only for deftp,
|
||
deftypefn, and deftypemethod. But the libc manual, for example,
|
||
needs to say:
|
||
@deftypevar {char *} tzname[2]
|
||
And simply allowing the extra text seems far simpler than trying
|
||
to invent yet more defn commands. In any case, we should either
|
||
output it or give an error, not silently ignore it. */
|
||
default:
|
||
process_defun_args (scan_args, 0);
|
||
break;
|
||
}
|
||
|
||
current_indent -= default_indentation_increment;
|
||
close_single_paragraph ();
|
||
|
||
if (html)
|
||
{
|
||
/* xx The single words (on, off) used here, should depend on
|
||
documentlanguage and NOT on gettext --kama. */
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case defvr:
|
||
case deftp:
|
||
case deftypefn:
|
||
case deftypevr:
|
||
insert_html_tag (END, "i"); /* close italic area for arguments */
|
||
/* put the rest into the second column */
|
||
add_word ("</td>\n");
|
||
add_html_elt ("<td align=\"right\">");
|
||
execute_string ("%s", category);
|
||
break;
|
||
|
||
case defcv:
|
||
add_word ("</td>\n");
|
||
add_html_elt ("<td align=\"right\">");
|
||
execute_string ("%s %s %s", category, _("of"), type_name);
|
||
break;
|
||
|
||
case defop:
|
||
case deftypemethod:
|
||
case deftypeop:
|
||
insert_html_tag (END, "i");
|
||
add_word ("</td>\n");
|
||
add_html_elt ("<td align=\"right\">");
|
||
execute_string ("%s %s %s", category, _("on"), type_name);
|
||
break;
|
||
|
||
case deftypeivar:
|
||
insert_html_tag (END, "i");
|
||
add_word ("</td>\n");
|
||
add_html_elt ("<td align=\"right\">");
|
||
execute_string ("%s %s %s", category, _("of"), type_name);
|
||
break;
|
||
} /* switch (base_type)... */
|
||
|
||
add_word ("</td>\n"); /* close second column */
|
||
add_word ("</tr>\n"); /* close row */
|
||
|
||
/* This is needed because I have to know if the next line is
|
||
normal text or another @def..x. If text follows, create a new
|
||
table to get the indentation for the following text.
|
||
|
||
This construction would fail if someone uses:
|
||
@deffn
|
||
@sp 2
|
||
@deffnx
|
||
.
|
||
@end deffn
|
||
But we don't care. */
|
||
if (!looking_at ("@def"))
|
||
{
|
||
add_word ("</table>\n");
|
||
add_html_elt ("<table width=\"95%\" align=\"center\">");
|
||
add_word ("\n<tr><td>\n");
|
||
}
|
||
|
||
} /* if (html)... */
|
||
|
||
/* Make an entry in the appropriate index. */
|
||
switch (base_type)
|
||
{
|
||
case deffn:
|
||
case deftypefn:
|
||
execute_string ("@findex %s\n", defined_name);
|
||
break;
|
||
case defvr:
|
||
case deftypevr:
|
||
case defcv:
|
||
execute_string ("@vindex %s\n", defined_name);
|
||
break;
|
||
case deftypeivar:
|
||
execute_string ("@vindex %s %s %s\n", defined_name, _("of"), type_name);
|
||
break;
|
||
case defop:
|
||
case deftypeop:
|
||
case deftypemethod:
|
||
execute_string ("@findex %s %s %s\n", defined_name, _("on"), type_name);
|
||
break;
|
||
case deftp:
|
||
execute_string ("@tindex %s\n", defined_name);
|
||
break;
|
||
}
|
||
|
||
/* Deallocate the token list. */
|
||
scan_args = defun_args;
|
||
while (1)
|
||
{
|
||
char * arg = (*scan_args++);
|
||
if (arg == NULL)
|
||
break;
|
||
free (arg);
|
||
}
|
||
free (defun_args);
|
||
}
|
||
|
||
/* Add an entry for a function, macro, special form, variable, or option.
|
||
If the name of the calling command ends in `x', then this is an extra
|
||
entry included in the body of an insertion of the same type. */
|
||
void
|
||
cm_defun ()
|
||
{
|
||
enum insertion_type type;
|
||
char *base_command = xstrdup (command); /* command with any `x' removed */
|
||
int x_p = (command[strlen (command) - 1] == 'x');
|
||
|
||
if (x_p)
|
||
base_command[strlen (base_command) - 1] = 0;
|
||
|
||
type = find_type_from_name (base_command);
|
||
|
||
/* If we are adding to an already existing insertion, then make sure
|
||
that we are already in an insertion of type TYPE. */
|
||
if (x_p && (!insertion_level || insertion_stack->insertion != type))
|
||
{
|
||
line_error (_("Must be in `@%s' environment to use `@%s'"),
|
||
base_command, command);
|
||
discard_until ("\n");
|
||
return;
|
||
}
|
||
else
|
||
defun_internal (type, x_p);
|
||
|
||
free (base_command);
|
||
}
|