mirror of
https://github.com/reactos/reactos.git
synced 2024-08-18 01:18:56 +00:00
764 lines
18 KiB
C
764 lines
18 KiB
C
/*
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* Copyright 1998 Bertho A. Stultiens (BS)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_IO_H
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# include <io.h>
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#endif
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#include "wine/wpp.h"
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#include "wpp_private.h"
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struct pp_status pp_status;
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#define HASHKEY 2039
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typedef struct pp_def_state
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{
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struct pp_def_state *next;
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pp_entry_t *defines[HASHKEY];
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} pp_def_state_t;
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static pp_def_state_t *pp_def_state;
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#define MAXIFSTACK 64
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static pp_if_state_t if_stack[MAXIFSTACK];
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static int if_stack_idx = 0;
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#if 0
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void pp_print_status(void) __attribute__((destructor));
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void pp_print_status(void)
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{
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int i;
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int sum;
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int total = 0;
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pp_entry_t *ppp;
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fprintf(stderr, "Defines statistics:\n");
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for(i = 0; i < HASHKEY; i++)
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{
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sum = 0;
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for(ppp = pp_def_state->defines[i]; ppp; ppp = ppp->next)
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sum++;
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total += sum;
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if (sum) fprintf(stderr, "%4d, %3d\n", i, sum);
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}
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fprintf(stderr, "Total defines: %d\n", total);
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}
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#endif
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void *pp_xmalloc(size_t size)
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{
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void *res;
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assert(size > 0);
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res = malloc(size);
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if(res == NULL)
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{
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/* Set the error flag */
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pp_status.state = 1;
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}
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return res;
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}
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void *pp_xrealloc(void *p, size_t size)
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{
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void *res;
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assert(size > 0);
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res = realloc(p, size);
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if(res == NULL)
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{
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/* Set the error flag */
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pp_status.state = 1;
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}
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return res;
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}
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char *pp_xstrdup(const char *str)
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{
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char *s;
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int len;
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assert(str != NULL);
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len = strlen(str)+1;
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s = pp_xmalloc(len);
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if(!s)
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return NULL;
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return memcpy(s, str, len);
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}
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static char *wpp_default_lookup(const char *name, int type, const char *parent_name,
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char **include_path, int include_path_count)
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{
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char *cpy;
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char *cptr;
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char *path;
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const char *ccptr;
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int i, fd;
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cpy = pp_xmalloc(strlen(name)+1);
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if(!cpy)
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return NULL;
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cptr = cpy;
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for(ccptr = name; *ccptr; ccptr++)
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{
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/* Convert to forward slash */
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if(*ccptr == '\\') {
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/* kill double backslash */
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if(ccptr[1] == '\\')
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ccptr++;
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*cptr = '/';
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}else {
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*cptr = *ccptr;
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}
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cptr++;
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}
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*cptr = '\0';
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if(type && parent_name)
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{
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/* Search directory of parent include and then -I path */
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const char *p;
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if ((p = strrchr( parent_name, '/' ))) p++;
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else p = parent_name;
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path = pp_xmalloc( (p - parent_name) + strlen(cpy) + 1 );
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if(!path)
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{
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free(cpy);
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return NULL;
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}
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memcpy( path, parent_name, p - parent_name );
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strcpy( path + (p - parent_name), cpy );
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fd = open( path, O_RDONLY );
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if (fd != -1)
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{
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close( fd );
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free( cpy );
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return path;
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}
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free( path );
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}
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/* Search -I path */
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for(i = 0; i < include_path_count; i++)
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{
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path = pp_xmalloc(strlen(include_path[i]) + strlen(cpy) + 2);
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if(!path)
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{
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free(cpy);
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return NULL;
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}
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strcpy(path, include_path[i]);
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strcat(path, "/");
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strcat(path, cpy);
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fd = open( path, O_RDONLY );
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if (fd != -1)
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{
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close( fd );
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free( cpy );
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return path;
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}
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free( path );
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}
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free( cpy );
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return NULL;
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}
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static void *wpp_default_open(const char *filename, int type) {
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return fopen(filename,"rt");
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}
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static void wpp_default_close(void *file) {
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fclose(file);
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}
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static int wpp_default_read(void *file, char *buffer, unsigned int len){
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return fread(buffer, 1, len, file);
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}
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static void wpp_default_write( const char *buffer, unsigned int len ) {
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fwrite(buffer, 1, len, ppy_out);
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}
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/* Don't comment on the hash, it's primitive but functional... */
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static int pphash(const char *str)
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{
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int sum = 0;
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while(*str)
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sum += *str++;
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return sum % HASHKEY;
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}
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pp_entry_t *pplookup(const char *ident)
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{
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int idx;
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pp_entry_t *ppp;
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if(!ident)
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return NULL;
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idx = pphash(ident);
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for(ppp = pp_def_state->defines[idx]; ppp; ppp = ppp->next)
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{
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if(!strcmp(ident, ppp->ident))
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return ppp;
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}
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return NULL;
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}
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static void free_pp_entry( pp_entry_t *ppp, int idx )
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{
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if(ppp->iep)
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{
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if(ppp->iep == pp_includelogiclist)
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{
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pp_includelogiclist = ppp->iep->next;
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if(pp_includelogiclist)
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pp_includelogiclist->prev = NULL;
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}
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else
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{
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ppp->iep->prev->next = ppp->iep->next;
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if(ppp->iep->next)
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ppp->iep->next->prev = ppp->iep->prev;
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}
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free(ppp->iep->filename);
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free(ppp->iep);
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}
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if(pp_def_state->defines[idx] == ppp)
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{
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pp_def_state->defines[idx] = ppp->next;
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if(pp_def_state->defines[idx])
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pp_def_state->defines[idx]->prev = NULL;
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}
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else
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{
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ppp->prev->next = ppp->next;
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if(ppp->next)
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ppp->next->prev = ppp->prev;
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}
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free(ppp);
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}
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/* push a new (empty) define state */
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int pp_push_define_state(void)
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{
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pp_def_state_t *state = pp_xmalloc( sizeof(*state) );
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if(!state)
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return 1;
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memset( state->defines, 0, sizeof(state->defines) );
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state->next = pp_def_state;
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pp_def_state = state;
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return 0;
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}
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/* pop the current define state */
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void pp_pop_define_state(void)
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{
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int i;
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pp_entry_t *ppp;
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pp_def_state_t *state;
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for (i = 0; i < HASHKEY; i++)
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{
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while ((ppp = pp_def_state->defines[i]) != NULL) pp_del_define( ppp->ident );
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}
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state = pp_def_state;
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pp_def_state = state->next;
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free( state );
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}
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void pp_del_define(const char *name)
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{
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pp_entry_t *ppp;
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int idx = pphash(name);
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if((ppp = pplookup(name)) == NULL)
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{
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if(pp_status.pedantic)
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ppy_warning("%s was not defined", name);
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return;
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}
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if(pp_status.debug)
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printf("Deleting (%s, %d) <%s>\n", pp_status.input, pp_status.line_number, name);
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free( ppp->ident );
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free( ppp->subst.text );
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free( ppp->filename );
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free_pp_entry( ppp, idx );
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}
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pp_entry_t *pp_add_define(const char *def, const char *text)
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{
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int len;
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char *cptr;
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int idx;
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pp_entry_t *ppp;
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if(!def)
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return NULL;
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idx = pphash(def);
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if((ppp = pplookup(def)) != NULL)
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{
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if(pp_status.pedantic)
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ppy_warning("Redefinition of %s\n\tPrevious definition: %s:%d", def, ppp->filename, ppp->linenumber);
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pp_del_define(def);
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}
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ppp = pp_xmalloc(sizeof(pp_entry_t));
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if(!ppp)
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return NULL;
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memset( ppp, 0, sizeof(*ppp) );
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ppp->ident = pp_xstrdup(def);
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if(!ppp->ident)
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goto error;
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ppp->type = def_define;
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ppp->subst.text = text ? pp_xstrdup(text) : NULL;
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if(text && !ppp->subst.text)
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goto error;
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ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
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if(!ppp->filename)
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goto error;
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ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
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ppp->next = pp_def_state->defines[idx];
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pp_def_state->defines[idx] = ppp;
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if(ppp->next)
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ppp->next->prev = ppp;
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if(ppp->subst.text)
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{
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/* Strip trailing white space from subst text */
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len = strlen(ppp->subst.text);
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while(len && strchr(" \t\r\n", ppp->subst.text[len-1]))
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{
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ppp->subst.text[--len] = '\0';
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}
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/* Strip leading white space from subst text */
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for(cptr = ppp->subst.text; *cptr && strchr(" \t\r", *cptr); cptr++)
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;
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if(ppp->subst.text != cptr)
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memmove(ppp->subst.text, cptr, strlen(cptr)+1);
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}
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if(pp_status.debug)
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printf("Added define (%s, %d) <%s> to <%s>\n", pp_status.input, pp_status.line_number, ppp->ident, ppp->subst.text ? ppp->subst.text : "(null)");
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return ppp;
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error:
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free(ppp->ident);
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free(ppp->subst.text);
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free(ppp);
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return NULL;
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}
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pp_entry_t *pp_add_macro(char *id, marg_t *args[], int nargs, mtext_t *exp)
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{
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int idx;
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pp_entry_t *ppp;
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if(!id)
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return NULL;
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idx = pphash(id);
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if((ppp = pplookup(id)) != NULL)
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{
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if(pp_status.pedantic)
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ppy_warning("Redefinition of %s\n\tPrevious definition: %s:%d", id, ppp->filename, ppp->linenumber);
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pp_del_define(id);
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}
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ppp = pp_xmalloc(sizeof(pp_entry_t));
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if(!ppp)
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return NULL;
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memset( ppp, 0, sizeof(*ppp) );
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ppp->ident = id;
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ppp->type = def_macro;
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ppp->margs = args;
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ppp->nargs = nargs;
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ppp->subst.mtext= exp;
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ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
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if(!ppp->filename)
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{
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free(ppp);
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return NULL;
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}
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ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
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ppp->next = pp_def_state->defines[idx];
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pp_def_state->defines[idx] = ppp;
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if(ppp->next)
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ppp->next->prev = ppp;
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if(pp_status.debug)
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{
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fprintf(stderr, "Added macro (%s, %d) <%s(%d)> to <", pp_status.input, pp_status.line_number, ppp->ident, nargs);
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for(; exp; exp = exp->next)
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{
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switch(exp->type)
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{
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case exp_text:
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fprintf(stderr, " \"%s\" ", exp->subst.text);
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break;
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case exp_stringize:
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fprintf(stderr, " #(%d) ", exp->subst.argidx);
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break;
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case exp_concat:
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fprintf(stderr, "##");
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break;
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case exp_subst:
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fprintf(stderr, " <%d> ", exp->subst.argidx);
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break;
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}
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}
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fprintf(stderr, ">\n");
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}
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return ppp;
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}
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/*
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*-------------------------------------------------------------------------
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* Include management
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*-------------------------------------------------------------------------
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*/
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#if defined(_WIN32) || defined(__MSDOS__)
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#define INCLUDESEPARATOR ";"
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#else
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#define INCLUDESEPARATOR ":"
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#endif
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static char **includepath;
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static int nincludepath = 0;
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int wpp_add_include_path(const char *path)
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{
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char *tok;
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char *cpy = pp_xstrdup(path);
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if(!cpy)
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return 1;
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tok = strtok(cpy, INCLUDESEPARATOR);
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while(tok)
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{
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if(*tok) {
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char *dir;
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char *cptr;
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char **new_path;
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dir = pp_xstrdup(tok);
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if(!dir)
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{
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free(cpy);
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return 1;
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}
|
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for(cptr = dir; *cptr; cptr++)
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{
|
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/* Convert to forward slash */
|
|
if(*cptr == '\\')
|
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*cptr = '/';
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}
|
|
/* Kill eventual trailing '/' */
|
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if(*(cptr = dir + strlen(dir)-1) == '/')
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*cptr = '\0';
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|
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/* Add to list */
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new_path = pp_xrealloc(includepath, (nincludepath+1) * sizeof(*includepath));
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if(!new_path)
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{
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free(dir);
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free(cpy);
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return 1;
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}
|
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includepath = new_path;
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includepath[nincludepath] = dir;
|
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nincludepath++;
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}
|
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tok = strtok(NULL, INCLUDESEPARATOR);
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}
|
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free(cpy);
|
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return 0;
|
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}
|
|
|
|
char *wpp_find_include(const char *name, const char *parent_name)
|
|
{
|
|
return wpp_default_lookup(name, !!parent_name, parent_name, includepath, nincludepath);
|
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}
|
|
|
|
void *pp_open_include(const char *name, int type, const char *parent_name, char **newpath)
|
|
{
|
|
char *path;
|
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void *fp;
|
|
|
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if (!(path = wpp_callbacks->lookup(name, type, parent_name, includepath,
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nincludepath))) return NULL;
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fp = wpp_callbacks->open(path, type);
|
|
|
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if (fp)
|
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{
|
|
if (pp_status.debug)
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printf("Going to include <%s>\n", path);
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if (newpath) *newpath = path;
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else free( path );
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return fp;
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}
|
|
free( path );
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
*-------------------------------------------------------------------------
|
|
* #if, #ifdef, #ifndef, #else, #elif and #endif state management
|
|
*
|
|
* #if state transitions are made on basis of the current TOS and the next
|
|
* required state. The state transitions are required to housekeep because
|
|
* #if:s can be nested. The ignore case is activated to prevent output from
|
|
* within a false clause.
|
|
* Some special cases come from the fact that the #elif cases are not
|
|
* binary, but three-state. The problem is that all other elif-cases must
|
|
* be false when one true one has been found. A second problem is that the
|
|
* #else clause is a final clause. No extra #else:s may follow.
|
|
*
|
|
* The states mean:
|
|
* if_true Process input to output
|
|
* if_false Process input but no output
|
|
* if_ignore Process input but no output
|
|
* if_elif Process input but no output
|
|
* if_elsefalse Process input but no output
|
|
* if_elsettrue Process input to output
|
|
*
|
|
* The possible state-sequences are [state(stack depth)] (rest can be deduced):
|
|
* TOS #if 1 #else #endif
|
|
* if_true(n) if_true(n+1) if_elsefalse(n+1)
|
|
* if_false(n) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elsetrue(n) if_true(n+1) if_elsefalse(n+1)
|
|
* if_elsefalse(n) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elif(n) if_ignore(n+1) if_ignore(n+1)
|
|
* if_ignore(n) if_ignore(n+1) if_ignore(n+1)
|
|
*
|
|
* TOS #if 1 #elif 0 #else #endif
|
|
* if_true(n) if_true(n+1) if_elif(n+1) if_elif(n+1)
|
|
* if_false(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elsetrue(n) if_true(n+1) if_elif(n+1) if_elif(n+1)
|
|
* if_elsefalse(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elif(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_ignore(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
*
|
|
* TOS #if 0 #elif 1 #else #endif
|
|
* if_true(n) if_false(n+1) if_true(n+1) if_elsefalse(n+1)
|
|
* if_false(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elsetrue(n) if_false(n+1) if_true(n+1) if_elsefalse(n+1)
|
|
* if_elsefalse(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_elif(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
* if_ignore(n) if_ignore(n+1) if_ignore(n+1) if_ignore(n+1)
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
static const char * const pp_if_state_str[] = {
|
|
"if_false",
|
|
"if_true",
|
|
"if_elif",
|
|
"if_elsefalse",
|
|
"if_elsetrue",
|
|
"if_ignore"
|
|
};
|
|
|
|
void pp_push_if(pp_if_state_t s)
|
|
{
|
|
if(if_stack_idx >= MAXIFSTACK)
|
|
pp_internal_error(__FILE__, __LINE__, "#if-stack overflow; #{if,ifdef,ifndef} nested too deeply (> %d)", MAXIFSTACK);
|
|
|
|
if(pp_flex_debug)
|
|
fprintf(stderr, "Push if %s:%d: %s(%d) -> %s(%d)\n", pp_status.input, pp_status.line_number, pp_if_state_str[pp_if_state()], if_stack_idx, pp_if_state_str[s], if_stack_idx+1);
|
|
|
|
if_stack[if_stack_idx++] = s;
|
|
|
|
switch(s)
|
|
{
|
|
case if_true:
|
|
case if_elsetrue:
|
|
break;
|
|
case if_false:
|
|
case if_elsefalse:
|
|
case if_elif:
|
|
case if_ignore:
|
|
pp_push_ignore_state();
|
|
break;
|
|
default:
|
|
pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d)", (int)pp_if_state());
|
|
}
|
|
}
|
|
|
|
pp_if_state_t pp_pop_if(void)
|
|
{
|
|
if(if_stack_idx <= 0)
|
|
{
|
|
ppy_error("#{endif,else,elif} without #{if,ifdef,ifndef} (#if-stack underflow)");
|
|
return if_error;
|
|
}
|
|
|
|
switch(pp_if_state())
|
|
{
|
|
case if_true:
|
|
case if_elsetrue:
|
|
break;
|
|
case if_false:
|
|
case if_elsefalse:
|
|
case if_elif:
|
|
case if_ignore:
|
|
pp_pop_ignore_state();
|
|
break;
|
|
default:
|
|
pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d)", (int)pp_if_state());
|
|
}
|
|
|
|
if(pp_flex_debug)
|
|
fprintf(stderr, "Pop if %s:%d: %s(%d) -> %s(%d)\n",
|
|
pp_status.input,
|
|
pp_status.line_number,
|
|
pp_if_state_str[pp_if_state()],
|
|
if_stack_idx,
|
|
pp_if_state_str[if_stack[if_stack_idx <= 1 ? if_true : if_stack_idx-2]],
|
|
if_stack_idx-1);
|
|
|
|
return if_stack[--if_stack_idx];
|
|
}
|
|
|
|
pp_if_state_t pp_if_state(void)
|
|
{
|
|
if(!if_stack_idx)
|
|
return if_true;
|
|
else
|
|
return if_stack[if_stack_idx-1];
|
|
}
|
|
|
|
|
|
void pp_next_if_state(int i)
|
|
{
|
|
switch(pp_if_state())
|
|
{
|
|
case if_true:
|
|
case if_elsetrue:
|
|
pp_push_if(i ? if_true : if_false);
|
|
break;
|
|
case if_false:
|
|
case if_elsefalse:
|
|
case if_elif:
|
|
case if_ignore:
|
|
pp_push_if(if_ignore);
|
|
break;
|
|
default:
|
|
pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #{if,ifdef,ifndef} directive", (int)pp_if_state());
|
|
}
|
|
}
|
|
|
|
int pp_get_if_depth(void)
|
|
{
|
|
return if_stack_idx;
|
|
}
|
|
|
|
/* #define WANT_NEAR_INDICATION */
|
|
|
|
static void generic_msg(const char *s, const char *t, const char *n, va_list ap)
|
|
{
|
|
fprintf(stderr, "%s:%d:%d: %s: ", pp_status.input ? pp_status.input : "stdin",
|
|
pp_status.line_number, pp_status.char_number, t);
|
|
vfprintf(stderr, s, ap);
|
|
#ifdef WANT_NEAR_INDICATION
|
|
{
|
|
char *cpy, *p;
|
|
if(n)
|
|
{
|
|
cpy = pp_xstrdup(n);
|
|
if(!cpy)
|
|
goto end;
|
|
for (p = cpy; *p; p++) if(!isprint(*p)) *p = ' ';
|
|
fprintf(stderr, " near '%s'", cpy);
|
|
free(cpy);
|
|
}
|
|
}
|
|
end:
|
|
#endif
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static void wpp_default_error(const char *file, int line, int col, const char *near, const char *msg, va_list ap)
|
|
{
|
|
generic_msg(msg, "Error", near, ap);
|
|
exit(1);
|
|
}
|
|
|
|
static void wpp_default_warning(const char *file, int line, int col, const char *near, const char *msg, va_list ap)
|
|
{
|
|
generic_msg(msg, "Warning", near, ap);
|
|
}
|
|
|
|
static const struct wpp_callbacks default_callbacks =
|
|
{
|
|
wpp_default_lookup,
|
|
wpp_default_open,
|
|
wpp_default_close,
|
|
wpp_default_read,
|
|
wpp_default_write,
|
|
wpp_default_error,
|
|
wpp_default_warning,
|
|
};
|
|
|
|
const struct wpp_callbacks *wpp_callbacks = &default_callbacks;
|
|
|
|
int ppy_error(const char *s, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, s);
|
|
wpp_callbacks->error(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
|
|
va_end(ap);
|
|
pp_status.state = 1;
|
|
return 1;
|
|
}
|
|
|
|
int ppy_warning(const char *s, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, s);
|
|
wpp_callbacks->warning(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
|
|
va_end(ap);
|
|
return 0;
|
|
}
|
|
|
|
void pp_internal_error(const char *file, int line, const char *s, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, s);
|
|
fprintf(stderr, "Internal error (please report) %s %d: ", file, line);
|
|
vfprintf(stderr, s, ap);
|
|
fprintf(stderr, "\n");
|
|
va_end(ap);
|
|
exit(3);
|
|
}
|