442 lines
10 KiB
C
442 lines
10 KiB
C
/* mclex.c -- lexer for Windows mc files parser.
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Copyright 2007
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Free Software Foundation, Inc.
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Written by Kai Tietz, Onevision.
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This file is part of GNU Binutils.
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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 of the License, or
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(at your option) 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
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* This is a lexer used by the Windows rc file parser.
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It basically just recognized a bunch of keywords. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bucomm.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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#include "windmc.h"
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#include "mcparse.h"
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#include <assert.h>
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/* Exported globals. */
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bfd_boolean mclex_want_nl = FALSE;
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bfd_boolean mclex_want_line = FALSE;
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bfd_boolean mclex_want_filename = FALSE;
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/* Local globals. */
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static unichar *input_stream = NULL;
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static unichar *input_stream_pos = NULL;
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static int input_line = 1;
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static const char *input_filename = NULL;
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void
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mc_set_content (const unichar *src)
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{
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if (!src)
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return;
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input_stream = input_stream_pos = unichar_dup (src);
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}
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void
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mc_set_inputfile (const char *name)
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{
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if (! name || *name == 0)
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input_filename = "-";
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else
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{
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const char *s1 = strrchr (name, '/');
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const char *s2 = strrchr (name, '\\');
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if (! s1)
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s1 = s2;
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if (s1 && s2 && s1 < s2)
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s1 = s2;
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if (! s1)
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s1 = name;
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else
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s1++;
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s1 = xstrdup (s1);
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input_filename = s1;
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}
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}
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static void
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show_msg (const char *kind, const char *msg, va_list argp)
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{
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fprintf (stderr, "In %s at line %d: %s: ", input_filename, input_line, kind);
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vfprintf (stderr, msg, argp);
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fprintf (stderr, ".\n");
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}
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void
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mc_warn (const char *s, ...)
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{
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va_list argp;
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va_start (argp, s);
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show_msg ("warning", s, argp);
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va_end (argp);
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}
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void
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mc_fatal (const char *s, ...)
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{
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va_list argp;
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va_start (argp, s);
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show_msg ("fatal", s, argp);
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va_end (argp);
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xexit (1);
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}
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int
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yyerror (const char *s, ...)
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{
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va_list argp;
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va_start (argp, s);
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show_msg ("parser", s, argp);
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va_end (argp);
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return 1;
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}
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static unichar *
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get_diff (unichar *end, unichar *start)
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{
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unichar *ret;
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unichar save = *end;
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*end = 0;
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ret = unichar_dup (start);
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*end = save;
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return ret;
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}
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static rc_uint_type
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parse_digit (unichar ch)
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{
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rc_uint_type base = 10, v = 0, c;
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if (ch == '0')
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{
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base = 8;
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switch (input_stream_pos[0])
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{
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case 'x': case 'X': base = 16; input_stream_pos++; break;
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case 'o': case 'O': base = 8; input_stream_pos++; break;
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case 'b': case 'B': base = 2; input_stream_pos++; break;
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}
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}
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else
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v = (rc_uint_type) (ch - '0');
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while ((ch = input_stream_pos[0]) != 0)
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{
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if (ch >= 'A' && ch <= 'F')
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c = (rc_uint_type) (ch - 'A') + 10;
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else if (ch >= 'a' && ch <= 'f')
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c = (rc_uint_type) (ch - 'a') + 10;
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else if (ch >= '0' && ch <= '9')
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c = (rc_uint_type) (ch - '0');
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else
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break;
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v *= base;
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v += c;
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++input_stream_pos;
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}
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if (input_stream_pos[0] == 'U' || input_stream_pos[0] == 'u')
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input_stream_pos++;
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if (input_stream_pos[0] == 'L' || input_stream_pos[0] == 'l')
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input_stream_pos++;
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if (input_stream_pos[0] == 'L' || input_stream_pos[0] == 'l')
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input_stream_pos++;
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return v;
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}
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static mc_keyword *keyword_top = NULL;
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const mc_keyword *
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enum_facility (int e)
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{
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mc_keyword *h = keyword_top;
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while (h != NULL)
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{
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while (h && strcmp (h->group_name, "facility") != 0)
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h = h->next;
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if (e == 0)
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return h;
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--e;
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if (h)
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h = h->next;
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}
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return h;
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}
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const mc_keyword *
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enum_severity (int e)
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{
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mc_keyword *h = keyword_top;
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while (h != NULL)
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{
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while (h && strcmp (h->group_name, "severity") != 0)
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h = h->next;
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if (e == 0)
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return h;
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--e;
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if (h)
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h = h->next;
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}
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return h;
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}
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static void
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mc_add_keyword_ascii (const char *sz, int rid, const char *grp, rc_uint_type nv, const char *sv)
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{
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unichar *usz, *usv = NULL;
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rc_uint_type usz_len;
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unicode_from_codepage (&usz_len, &usz, sz, CP_ACP);
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if (sv)
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unicode_from_codepage (&usz_len, &usv, sv, CP_ACP);
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mc_add_keyword (usz, rid, grp, nv, usv);
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}
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void
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mc_add_keyword (unichar *usz, int rid, const char *grp, rc_uint_type nv, unichar *sv)
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{
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mc_keyword *p, *c, *n;
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size_t len = unichar_len (usz);
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c = keyword_top;
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p = NULL;
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while (c != NULL)
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{
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if (c->len > len)
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break;
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if (c->len == len)
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{
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int e = memcmp (usz, c->usz, len * sizeof (unichar));
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if (e < 0)
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break;
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if (! e)
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{
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if (! strcmp (grp, "keyword") || strcmp (c->group_name, grp) != 0)
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fatal (_("Duplicate symbol entered into keyword list."));
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c->rid = rid;
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c->nval = nv;
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c->sval = (!sv ? NULL : unichar_dup (sv));
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if (! strcmp (grp, "language"))
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{
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const wind_language_t *lag = wind_find_language_by_id ((unsigned) nv);
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if (lag == NULL)
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fatal ("Language ident 0x%lx is not resolvable.\n", (long) nv);
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memcpy (&c->lang_info, lag, sizeof (*lag));
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}
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return;
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}
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}
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c = (p = c)->next;
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}
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n = xmalloc (sizeof (mc_keyword));
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n->next = c;
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n->len = len;
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n->group_name = grp;
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n->usz = usz;
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n->rid = rid;
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n->nval = nv;
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n->sval = (!sv ? NULL : unichar_dup (sv));
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if (! strcmp (grp, "language"))
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{
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const wind_language_t *lag = wind_find_language_by_id ((unsigned) nv);
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if (lag == NULL)
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fatal ("Language ident 0x%lx is not resolvable.\n", (long) nv);
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memcpy (&n->lang_info, lag, sizeof (*lag));
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}
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if (! p)
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keyword_top = n;
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else
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p->next = n;
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}
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static int
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mc_token (const unichar *t, size_t len)
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{
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static int was_init = 0;
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mc_keyword *k;
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if (! was_init)
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{
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was_init = 1;
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mc_add_keyword_ascii ("OutputBase", MCOUTPUTBASE, "keyword", 0, NULL);
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mc_add_keyword_ascii ("MessageIdTypedef", MCMESSAGEIDTYPEDEF, "keyword", 0, NULL);
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mc_add_keyword_ascii ("SeverityNames", MCSEVERITYNAMES, "keyword", 0, NULL);
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mc_add_keyword_ascii ("FacilityNames", MCFACILITYNAMES, "keyword", 0, NULL);
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mc_add_keyword_ascii ("LanguageNames", MCLANGUAGENAMES, "keyword", 0, NULL);
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mc_add_keyword_ascii ("MessageId", MCMESSAGEID, "keyword", 0, NULL);
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mc_add_keyword_ascii ("Severity", MCSEVERITY, "keyword", 0, NULL);
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mc_add_keyword_ascii ("Facility", MCFACILITY, "keyword", 0, NULL);
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mc_add_keyword_ascii ("SymbolicName", MCSYMBOLICNAME, "keyword", 0, NULL);
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mc_add_keyword_ascii ("Language", MCLANGUAGE, "keyword", 0, NULL);
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mc_add_keyword_ascii ("Success", MCTOKEN, "severity", 0, NULL);
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mc_add_keyword_ascii ("Informational", MCTOKEN, "severity", 1, NULL);
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mc_add_keyword_ascii ("Warning", MCTOKEN, "severity", 2, NULL);
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mc_add_keyword_ascii ("Error", MCTOKEN, "severity", 3, NULL);
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mc_add_keyword_ascii ("System", MCTOKEN, "facility", 0xff, NULL);
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mc_add_keyword_ascii ("Application", MCTOKEN, "facility", 0xfff, NULL);
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mc_add_keyword_ascii ("English", MCTOKEN, "language", 0x409, "MSG00001");
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}
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k = keyword_top;
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if (!len || !t || *t == 0)
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return -1;
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while (k != NULL)
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{
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if (k->len > len)
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break;
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if (k->len == len)
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{
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if (! memcmp (k->usz, t, len * sizeof (unichar)))
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{
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if (k->rid == MCTOKEN)
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yylval.tok = k;
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return k->rid;
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}
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}
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k = k->next;
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}
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return -1;
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}
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int
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yylex (void)
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{
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unichar *start_token;
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unichar ch;
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if (! input_stream_pos)
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{
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fatal ("Input stream not setuped.\n");
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return -1;
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}
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if (mclex_want_line)
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{
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start_token = input_stream_pos;
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if (input_stream_pos[0] == '.'
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&& (input_stream_pos[1] == '\n'
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|| (input_stream_pos[1] == '\r' && input_stream_pos[2] == '\n')))
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{
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mclex_want_line = FALSE;
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while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n')
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++input_stream_pos;
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if (input_stream_pos[0] == '\n')
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++input_stream_pos;
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return MCENDLINE;
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}
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while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n')
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++input_stream_pos;
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if (input_stream_pos[0] == '\n')
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++input_stream_pos;
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yylval.ustr = get_diff (input_stream_pos, start_token);
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return MCLINE;
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}
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while ((ch = input_stream_pos[0]) <= 0x20)
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{
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if (ch == 0)
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return -1;
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++input_stream_pos;
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if (ch == '\n')
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input_line += 1;
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if (mclex_want_nl && ch == '\n')
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{
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mclex_want_nl = FALSE;
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return NL;
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}
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}
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start_token = input_stream_pos;
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++input_stream_pos;
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if (mclex_want_filename)
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{
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mclex_want_filename = FALSE;
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if (ch == '"')
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{
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start_token++;
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while ((ch = input_stream_pos[0]) != 0)
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{
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if (ch == '"')
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break;
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++input_stream_pos;
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}
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yylval.ustr = get_diff (input_stream_pos, start_token);
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if (ch == '"')
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++input_stream_pos;
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}
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else
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{
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while ((ch = input_stream_pos[0]) != 0)
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{
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if (ch <= 0x20 || ch == ')')
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break;
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++input_stream_pos;
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}
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yylval.ustr = get_diff (input_stream_pos, start_token);
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}
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return MCFILENAME;
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}
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switch (ch)
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{
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case ';':
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++start_token;
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while (input_stream_pos[0] != '\n' && input_stream_pos[0] != 0)
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++input_stream_pos;
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if (input_stream_pos[0] == '\n')
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input_stream_pos++;
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yylval.ustr = get_diff (input_stream_pos, start_token);
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return MCCOMMENT;
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case '=':
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return '=';
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case '(':
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return '(';
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case ')':
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return ')';
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case '+':
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return '+';
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case ':':
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return ':';
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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yylval.ival = parse_digit (ch);
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return MCNUMBER;
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default:
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if (ch >= 0x40)
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{
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int ret;
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while (input_stream_pos[0] >= 0x40 || (input_stream_pos[0] >= '0' && input_stream_pos[0] <= '9'))
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++input_stream_pos;
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ret = mc_token (start_token, (size_t) (input_stream_pos - start_token));
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if (ret != -1)
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return ret;
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yylval.ustr = get_diff (input_stream_pos, start_token);
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return MCIDENT;
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}
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yyerror ("illegal character 0x%x.", ch);
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}
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return -1;
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}
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