diff options
Diffstat (limited to 'libXfont/src/fontfile/dirfile.c')
-rw-r--r-- | libXfont/src/fontfile/dirfile.c | 984 |
1 files changed, 492 insertions, 492 deletions
diff --git a/libXfont/src/fontfile/dirfile.c b/libXfont/src/fontfile/dirfile.c index 50eb2faf5..c8aff6f4f 100644 --- a/libXfont/src/fontfile/dirfile.c +++ b/libXfont/src/fontfile/dirfile.c @@ -1,492 +1,492 @@ -/*
-
-Copyright 1991, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-
-/*
- * Author: Keith Packard, MIT X Consortium
- */
-
-/*
- * dirfile.c
- *
- * Read fonts.dir and fonts.alias files
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <X11/fonts/fntfilst.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-
-static Bool AddFileNameAliases ( FontDirectoryPtr dir );
-static int ReadFontAlias ( char *directory, Bool isFile,
- FontDirectoryPtr *pdir );
-static int lexAlias ( FILE *file, char **lexToken );
-static int lexc ( FILE *file );
-
-int
-FontFileReadDirectory (char *directory, FontDirectoryPtr *pdir)
-{
- char file_name[MAXFONTFILENAMELEN];
- char font_name[MAXFONTNAMELEN];
- char dir_file[MAXFONTFILENAMELEN];
- char dir_path[MAXFONTFILENAMELEN];
- char *ptr;
- FILE *file;
- int count,
- num_fonts,
- status;
- struct stat statb;
- static char format[24] = "";
-#if defined(WIN32)
- int i;
-#endif
-
- FontDirectoryPtr dir = NullFontDirectory;
-
- if (strlen(directory) + 1 + sizeof(FontDirFile) > sizeof(dir_file))
- return BadFontPath;
-
- /* Check for font directory attributes */
-#if !defined(WIN32)
- if ((ptr = strchr(directory, ':'))) {
-#else
- /* OS/2 and WIN32 path might start with a drive letter, don't clip this */
- if ((ptr = strchr(directory+2, ':'))) {
-#endif
- strncpy(dir_path, directory, ptr - directory);
- dir_path[ptr - directory] = '\0';
- } else {
- strcpy(dir_path, directory);
- }
- strcpy(dir_file, dir_path);
- if (dir_file[strlen(dir_file) - 1] != '/')
- strcat(dir_file, "/");
- strcat(dir_file, FontDirFile);
- file = fopen(dir_file, "rt");
- if (file) {
-#ifndef WIN32
- if (fstat (fileno(file), &statb) == -1)
-#else
- if (stat (dir_file, &statb) == -1)
-#endif
- {
- fclose(file);
- return BadFontPath;
- }
- count = fscanf(file, "%d\n", &num_fonts);
- if ((count == EOF) || (count != 1)) {
- fclose(file);
- return BadFontPath;
- }
- dir = FontFileMakeDir(directory, num_fonts);
- if (dir == NULL) {
- fclose(file);
- return BadFontPath;
- }
- dir->dir_mtime = statb.st_mtime;
- if (format[0] == '\0')
- sprintf(format, "%%%ds %%%d[^\n]\n",
- MAXFONTFILENAMELEN-1, MAXFONTNAMELEN-1);
-
- while ((count = fscanf(file, format, file_name, font_name)) != EOF) {
-#if defined(WIN32)
- /* strip any existing trailing CR */
- for (i=0; i<strlen(font_name); i++) {
- if (font_name[i]=='\r') font_name[i] = '\0';
- }
-#endif
- if (count != 2) {
- FontFileFreeDir (dir);
- fclose(file);
- return BadFontPath;
- }
-
- /*
- * We blindly try to load all the font files specified.
- * In theory, we might want to warn that some of the fonts
- * couldn't be loaded.
- */
- FontFileAddFontFile (dir, font_name, file_name);
- }
- fclose(file);
-
- } else if (errno != ENOENT) {
- return BadFontPath;
- }
- status = ReadFontAlias(dir_path, FALSE, &dir);
- if (status != Successful) {
- if (dir)
- FontFileFreeDir (dir);
- return status;
- }
- if (!dir)
- return BadFontPath;
-
- FontFileSortDir(dir);
-
- *pdir = dir;
- return Successful;
-}
-
-Bool
-FontFileDirectoryChanged(FontDirectoryPtr dir)
-{
- char dir_file[MAXFONTFILENAMELEN];
- struct stat statb;
-
- if (strlen(dir->directory) + sizeof(FontDirFile) > sizeof(dir_file))
- return FALSE;
-
- strcpy (dir_file, dir->directory);
- strcat (dir_file, FontDirFile);
- if (stat (dir_file, &statb) == -1)
- {
- if (errno != ENOENT || dir->dir_mtime != 0)
- return TRUE;
- return FALSE; /* doesn't exist and never did: no change */
- }
- if (dir->dir_mtime != statb.st_mtime)
- return TRUE;
-
- if ((strlen(dir->directory) + sizeof(FontAliasFile)) > sizeof(dir_file))
- return FALSE;
- strcpy (dir_file, dir->directory);
- strcat (dir_file, FontAliasFile);
- if (stat (dir_file, &statb) == -1)
- {
- if (errno != ENOENT || dir->alias_mtime != 0)
- return TRUE;
- return FALSE; /* doesn't exist and never did: no change */
- }
- if (dir->alias_mtime != statb.st_mtime)
- return TRUE;
- return FALSE;
-}
-
-/*
- * Make each of the file names an automatic alias for each of the files.
- */
-
-static Bool
-AddFileNameAliases(FontDirectoryPtr dir)
-{
- int i;
- char copy[MAXFONTFILENAMELEN];
- char *fileName;
- FontTablePtr table;
- FontRendererPtr renderer;
- int len;
- FontNameRec name;
-
- table = &dir->nonScalable;
- for (i = 0; i < table->used; i++) {
- if (table->entries[i].type != FONT_ENTRY_BITMAP)
- continue;
- fileName = table->entries[i].u.bitmap.fileName;
- renderer = FontFileMatchRenderer (fileName);
- if (!renderer)
- continue;
-
- len = strlen (fileName) - renderer->fileSuffixLen;
- if (len >= sizeof(copy))
- continue;
- CopyISOLatin1Lowered (copy, fileName, len);
- copy[len] = '\0';
- name.name = copy;
- name.length = len;
- name.ndashes = FontFileCountDashes (copy, len);
-
- if (!FontFileFindNameInDir(table, &name)) {
- if (!FontFileAddFontAlias (dir, copy, table->entries[i].name.name))
- return FALSE;
- }
- }
- return TRUE;
-}
-
-/*
- * parse the font.alias file. Format is:
- *
- * alias font-name
- *
- * To imbed white-space in an alias name, enclose it like "font name"
- * in double quotes. \ escapes and character, so
- * "font name \"With Double Quotes\" \\ and \\ back-slashes"
- * works just fine.
- *
- * A line beginning with a ! denotes a newline-terminated comment.
- */
-
-/*
- * token types
- */
-
-#define NAME 0
-#define NEWLINE 1
-#define DONE 2
-#define EALLOC 3
-
-static int
-ReadFontAlias(char *directory, Bool isFile, FontDirectoryPtr *pdir)
-{
- char alias[MAXFONTNAMELEN];
- char font_name[MAXFONTNAMELEN];
- char alias_file[MAXFONTFILENAMELEN];
- FILE *file;
- FontDirectoryPtr dir;
- int token;
- char *lexToken;
- int status = Successful;
- struct stat statb;
-
- if (strlen(directory) >= sizeof(alias_file))
- return BadFontPath;
- dir = *pdir;
- strcpy(alias_file, directory);
- if (!isFile) {
- if (strlen(directory) + 1 + sizeof(FontAliasFile) > sizeof(alias_file))
- return BadFontPath;
- if (directory[strlen(directory) - 1] != '/')
- strcat(alias_file, "/");
- strcat(alias_file, FontAliasFile);
- }
- file = fopen(alias_file, "rt");
- if (!file)
- return ((errno == ENOENT) ? Successful : BadFontPath);
- if (!dir)
- *pdir = dir = FontFileMakeDir(directory, 10);
- if (!dir)
- {
- fclose (file);
- return AllocError;
- }
-#ifndef WIN32
- if (fstat (fileno (file), &statb) == -1)
-#else
- if (stat (alias_file, &statb) == -1)
-#endif
- {
- fclose (file);
- return BadFontPath;
- }
- dir->alias_mtime = statb.st_mtime;
- while (status == Successful) {
- token = lexAlias(file, &lexToken);
- switch (token) {
- case NEWLINE:
- break;
- case DONE:
- fclose(file);
- return Successful;
- case EALLOC:
- status = AllocError;
- break;
- case NAME:
- if (strlen(lexToken) >= sizeof(alias)) {
- status = BadFontPath;
- break;
- }
- strcpy(alias, lexToken);
- token = lexAlias(file, &lexToken);
- switch (token) {
- case NEWLINE:
- if (strcmp(alias, "FILE_NAMES_ALIASES"))
- status = BadFontPath;
- else if (!AddFileNameAliases(dir))
- status = AllocError;
- break;
- case DONE:
- status = BadFontPath;
- break;
- case EALLOC:
- status = AllocError;
- break;
- case NAME:
- if (strlen(lexToken) >= sizeof(font_name)) {
- status = BadFontPath;
- break;
- }
- CopyISOLatin1Lowered(alias, alias, strlen(alias));
- CopyISOLatin1Lowered(font_name, lexToken, strlen(lexToken));
- if (!FontFileAddFontAlias (dir, alias, font_name))
- status = AllocError;
- break;
- }
- }
- }
- fclose(file);
- return status;
-}
-
-#define QUOTE 0
-#define WHITE 1
-#define NORMAL 2
-#define END 3
-#define NL 4
-#define BANG 5
-
-static int charClass;
-
-static int
-lexAlias(FILE *file, char **lexToken)
-{
- int c;
- char *t;
- enum state {
- Begin, Normal, Quoted, Comment
- } state;
- int count;
-
- static char *tokenBuf = (char *) NULL;
- static int tokenSize = 0;
-
- t = tokenBuf;
- count = 0;
- state = Begin;
- for (;;) {
- if (count == tokenSize) {
- int nsize;
- char *nbuf;
-
- nsize = tokenSize ? (tokenSize << 1) : 64;
- nbuf = realloc(tokenBuf, nsize);
- if (!nbuf)
- return EALLOC;
- tokenBuf = nbuf;
- tokenSize = nsize;
- t = tokenBuf + count;
- }
- c = lexc(file);
- switch (charClass) {
- case QUOTE:
- switch (state) {
- case Begin:
- case Normal:
- state = Quoted;
- break;
- case Quoted:
- state = Normal;
- break;
- case Comment:
- break;
- }
- break;
- case WHITE:
- switch (state) {
- case Begin:
- case Comment:
- continue;
- case Normal:
- *t = '\0';
- *lexToken = tokenBuf;
- return NAME;
- case Quoted:
- break;
- }
- /* fall through */
- case NORMAL:
- switch (state) {
- case Begin:
- state = Normal;
- break;
- case Comment:
- continue;
- default:
- break;
- }
- *t++ = c;
- ++count;
- break;
- case END:
- case NL:
- switch (state) {
- case Begin:
- case Comment:
- *lexToken = (char *) NULL;
- return charClass == END ? DONE : NEWLINE;
- default:
- *t = '\0';
- *lexToken = tokenBuf;
- ungetc(c, file);
- return NAME;
- }
- break;
- case BANG:
- switch (state) {
- case Begin:
- state = Comment;
- break;
- case Comment:
- break;
- default:
- *t++ = c;
- ++count;
- }
- break;
- }
- }
-}
-
-static int
-lexc(FILE *file)
-{
- int c;
-
- c = getc(file);
- switch (c) {
- case EOF:
- charClass = END;
- break;
- case '\\':
- c = getc(file);
- if (c == EOF)
- charClass = END;
- else
- charClass = NORMAL;
- break;
- case '"':
- charClass = QUOTE;
- break;
- case ' ':
- case '\t':
- charClass = WHITE;
- break;
- case '\r':
- case '\n':
- charClass = NL;
- break;
- case '!':
- charClass = BANG;
- break;
- default:
- charClass = NORMAL;
- break;
- }
- return c;
-}
+/* + +Copyright 1991, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +/* + * Author: Keith Packard, MIT X Consortium + */ + +/* + * dirfile.c + * + * Read fonts.dir and fonts.alias files + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/fonts/fntfilst.h> +#include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> + +static Bool AddFileNameAliases ( FontDirectoryPtr dir ); +static int ReadFontAlias ( char *directory, Bool isFile, + FontDirectoryPtr *pdir ); +static int lexAlias ( FILE *file, char **lexToken ); +static int lexc ( FILE *file ); + +int +FontFileReadDirectory (char *directory, FontDirectoryPtr *pdir) +{ + char file_name[MAXFONTFILENAMELEN]; + char font_name[MAXFONTNAMELEN]; + char dir_file[MAXFONTFILENAMELEN]; + char dir_path[MAXFONTFILENAMELEN]; + char *ptr; + FILE *file; + int count, + num_fonts, + status; + struct stat statb; + static char format[24] = ""; +#if defined(WIN32) + int i; +#endif + + FontDirectoryPtr dir = NullFontDirectory; + + if (strlen(directory) + 1 + sizeof(FontDirFile) > sizeof(dir_file)) + return BadFontPath; + + /* Check for font directory attributes */ +#if !defined(WIN32) + if ((ptr = strchr(directory, ':'))) { +#else + /* OS/2 and WIN32 path might start with a drive letter, don't clip this */ + if ((ptr = strchr(directory+2, ':'))) { +#endif + strncpy(dir_path, directory, ptr - directory); + dir_path[ptr - directory] = '\0'; + } else { + strcpy(dir_path, directory); + } + strcpy(dir_file, dir_path); + if (dir_file[strlen(dir_file) - 1] != '/') + strcat(dir_file, "/"); + strcat(dir_file, FontDirFile); + file = fopen(dir_file, "rt"); + if (file) { +#ifndef WIN32 + if (fstat (fileno(file), &statb) == -1) +#else + if (stat (dir_file, &statb) == -1) +#endif + { + fclose(file); + return BadFontPath; + } + count = fscanf(file, "%d\n", &num_fonts); + if ((count == EOF) || (count != 1)) { + fclose(file); + return BadFontPath; + } + dir = FontFileMakeDir(directory, num_fonts); + if (dir == NULL) { + fclose(file); + return BadFontPath; + } + dir->dir_mtime = statb.st_mtime; + if (format[0] == '\0') + sprintf(format, "%%%ds %%%d[^\n]\n", + MAXFONTFILENAMELEN-1, MAXFONTNAMELEN-1); + + while ((count = fscanf(file, format, file_name, font_name)) != EOF) { +#if defined(WIN32) + /* strip any existing trailing CR */ + for (i=0; i<strlen(font_name); i++) { + if (font_name[i]=='\r') font_name[i] = '\0'; + } +#endif + if (count != 2) { + FontFileFreeDir (dir); + fclose(file); + return BadFontPath; + } + + /* + * We blindly try to load all the font files specified. + * In theory, we might want to warn that some of the fonts + * couldn't be loaded. + */ + FontFileAddFontFile (dir, font_name, file_name); + } + fclose(file); + + } else if (errno != ENOENT) { + return BadFontPath; + } + status = ReadFontAlias(dir_path, FALSE, &dir); + if (status != Successful) { + if (dir) + FontFileFreeDir (dir); + return status; + } + if (!dir) + return BadFontPath; + + FontFileSortDir(dir); + + *pdir = dir; + return Successful; +} + +Bool +FontFileDirectoryChanged(FontDirectoryPtr dir) +{ + char dir_file[MAXFONTFILENAMELEN]; + struct stat statb; + + if (strlen(dir->directory) + sizeof(FontDirFile) > sizeof(dir_file)) + return FALSE; + + strcpy (dir_file, dir->directory); + strcat (dir_file, FontDirFile); + if (stat (dir_file, &statb) == -1) + { + if (errno != ENOENT || dir->dir_mtime != 0) + return TRUE; + return FALSE; /* doesn't exist and never did: no change */ + } + if (dir->dir_mtime != statb.st_mtime) + return TRUE; + + if ((strlen(dir->directory) + sizeof(FontAliasFile)) > sizeof(dir_file)) + return FALSE; + strcpy (dir_file, dir->directory); + strcat (dir_file, FontAliasFile); + if (stat (dir_file, &statb) == -1) + { + if (errno != ENOENT || dir->alias_mtime != 0) + return TRUE; + return FALSE; /* doesn't exist and never did: no change */ + } + if (dir->alias_mtime != statb.st_mtime) + return TRUE; + return FALSE; +} + +/* + * Make each of the file names an automatic alias for each of the files. + */ + +static Bool +AddFileNameAliases(FontDirectoryPtr dir) +{ + int i; + char copy[MAXFONTFILENAMELEN]; + char *fileName; + FontTablePtr table; + FontRendererPtr renderer; + int len; + FontNameRec name; + + table = &dir->nonScalable; + for (i = 0; i < table->used; i++) { + if (table->entries[i].type != FONT_ENTRY_BITMAP) + continue; + fileName = table->entries[i].u.bitmap.fileName; + renderer = FontFileMatchRenderer (fileName); + if (!renderer) + continue; + + len = strlen (fileName) - renderer->fileSuffixLen; + if (len >= sizeof(copy)) + continue; + CopyISOLatin1Lowered (copy, fileName, len); + copy[len] = '\0'; + name.name = copy; + name.length = len; + name.ndashes = FontFileCountDashes (copy, len); + + if (!FontFileFindNameInDir(table, &name)) { + if (!FontFileAddFontAlias (dir, copy, table->entries[i].name.name)) + return FALSE; + } + } + return TRUE; +} + +/* + * parse the font.alias file. Format is: + * + * alias font-name + * + * To imbed white-space in an alias name, enclose it like "font name" + * in double quotes. \ escapes and character, so + * "font name \"With Double Quotes\" \\ and \\ back-slashes" + * works just fine. + * + * A line beginning with a ! denotes a newline-terminated comment. + */ + +/* + * token types + */ + +#define NAME 0 +#define NEWLINE 1 +#define DONE 2 +#define EALLOC 3 + +static int +ReadFontAlias(char *directory, Bool isFile, FontDirectoryPtr *pdir) +{ + char alias[MAXFONTNAMELEN]; + char font_name[MAXFONTNAMELEN]; + char alias_file[MAXFONTFILENAMELEN]; + FILE *file; + FontDirectoryPtr dir; + int token; + char *lexToken; + int status = Successful; + struct stat statb; + + if (strlen(directory) >= sizeof(alias_file)) + return BadFontPath; + dir = *pdir; + strcpy(alias_file, directory); + if (!isFile) { + if (strlen(directory) + 1 + sizeof(FontAliasFile) > sizeof(alias_file)) + return BadFontPath; + if (directory[strlen(directory) - 1] != '/') + strcat(alias_file, "/"); + strcat(alias_file, FontAliasFile); + } + file = fopen(alias_file, "rt"); + if (!file) + return ((errno == ENOENT) ? Successful : BadFontPath); + if (!dir) + *pdir = dir = FontFileMakeDir(directory, 10); + if (!dir) + { + fclose (file); + return AllocError; + } +#ifndef WIN32 + if (fstat (fileno (file), &statb) == -1) +#else + if (stat (alias_file, &statb) == -1) +#endif + { + fclose (file); + return BadFontPath; + } + dir->alias_mtime = statb.st_mtime; + while (status == Successful) { + token = lexAlias(file, &lexToken); + switch (token) { + case NEWLINE: + break; + case DONE: + fclose(file); + return Successful; + case EALLOC: + status = AllocError; + break; + case NAME: + if (strlen(lexToken) >= sizeof(alias)) { + status = BadFontPath; + break; + } + strcpy(alias, lexToken); + token = lexAlias(file, &lexToken); + switch (token) { + case NEWLINE: + if (strcmp(alias, "FILE_NAMES_ALIASES")) + status = BadFontPath; + else if (!AddFileNameAliases(dir)) + status = AllocError; + break; + case DONE: + status = BadFontPath; + break; + case EALLOC: + status = AllocError; + break; + case NAME: + if (strlen(lexToken) >= sizeof(font_name)) { + status = BadFontPath; + break; + } + CopyISOLatin1Lowered(alias, alias, strlen(alias)); + CopyISOLatin1Lowered(font_name, lexToken, strlen(lexToken)); + if (!FontFileAddFontAlias (dir, alias, font_name)) + status = AllocError; + break; + } + } + } + fclose(file); + return status; +} + +#define QUOTE 0 +#define WHITE 1 +#define NORMAL 2 +#define END 3 +#define NL 4 +#define BANG 5 + +static int charClass; + +static int +lexAlias(FILE *file, char **lexToken) +{ + int c; + char *t; + enum state { + Begin, Normal, Quoted, Comment + } state; + int count; + + static char *tokenBuf = (char *) NULL; + static int tokenSize = 0; + + t = tokenBuf; + count = 0; + state = Begin; + for (;;) { + if (count == tokenSize) { + int nsize; + char *nbuf; + + nsize = tokenSize ? (tokenSize << 1) : 64; + nbuf = realloc(tokenBuf, nsize); + if (!nbuf) + return EALLOC; + tokenBuf = nbuf; + tokenSize = nsize; + t = tokenBuf + count; + } + c = lexc(file); + switch (charClass) { + case QUOTE: + switch (state) { + case Begin: + case Normal: + state = Quoted; + break; + case Quoted: + state = Normal; + break; + case Comment: + break; + } + break; + case WHITE: + switch (state) { + case Begin: + case Comment: + continue; + case Normal: + *t = '\0'; + *lexToken = tokenBuf; + return NAME; + case Quoted: + break; + } + /* fall through */ + case NORMAL: + switch (state) { + case Begin: + state = Normal; + break; + case Comment: + continue; + default: + break; + } + *t++ = c; + ++count; + break; + case END: + case NL: + switch (state) { + case Begin: + case Comment: + *lexToken = (char *) NULL; + return charClass == END ? DONE : NEWLINE; + default: + *t = '\0'; + *lexToken = tokenBuf; + ungetc(c, file); + return NAME; + } + break; + case BANG: + switch (state) { + case Begin: + state = Comment; + break; + case Comment: + break; + default: + *t++ = c; + ++count; + } + break; + } + } +} + +static int +lexc(FILE *file) +{ + int c; + + c = getc(file); + switch (c) { + case EOF: + charClass = END; + break; + case '\\': + c = getc(file); + if (c == EOF) + charClass = END; + else + charClass = NORMAL; + break; + case '"': + charClass = QUOTE; + break; + case ' ': + case '\t': + charClass = WHITE; + break; + case '\r': + case '\n': + charClass = NL; + break; + case '!': + charClass = BANG; + break; + default: + charClass = NORMAL; + break; + } + return c; +} |