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options.c
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/*
* $Id: options.c 576 2007-06-30 04:16:23Z elliotth $
*
* Copyright (c) 1996-2003, Darren Hiebert
*
* This source code is released for free distribution under the terms of the
* GNU General Public License.
*
* This module contains functions to process command line options.
*/
/*
* INCLUDE FILES
*/
#include "general.h" /* must always come first */
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h> /* to declare isspace () */
#include "ctags.h"
#include "debug.h"
#include "main.h"
#define OPTION_WRITE
#include "options.h"
#include "parse.h"
#include "routines.h"
/*
* MACROS
*/
#define INVOCATION "Usage: %s [options] [file(s)]\n"
#define CTAGS_ENVIRONMENT "CTAGS"
#define ETAGS_ENVIRONMENT "ETAGS"
#define CTAGS_FILE "tags"
#define ETAGS_FILE "TAGS"
#ifndef ETAGS
# define ETAGS "etags" /* name which causes default use of to -e */
#endif
/* The following separators are permitted for list options.
*/
#define EXTENSION_SEPARATOR '.'
#define PATTERN_START '('
#define PATTERN_STOP ')'
#define IGNORE_SEPARATORS ", \t\n"
#ifndef DEFAULT_FILE_FORMAT
# define DEFAULT_FILE_FORMAT 2
#endif
#if defined (HAVE_OPENDIR) || defined (HAVE_FINDFIRST) || defined (HAVE__FINDFIRST) || defined (AMIGA)
# define RECURSE_SUPPORTED
#endif
#define isCompoundOption(c) (boolean) (strchr ("fohiILpDb", (c)) != NULL)
/*
* Data declarations
*/
enum eOptionLimits {
MaxHeaderExtensions = 100, /* maximum number of extensions in -h option */
MaxSupportedTagFormat = 2
};
typedef struct sOptionDescription {
int usedByEtags;
const char *description;
} optionDescription;
typedef void (*parametricOptionHandler) (const char *const option, const char *const parameter);
typedef const struct {
const char* name; /* name of option as specified by user */
parametricOptionHandler handler; /* routine to handle option */
boolean initOnly; /* option must be specified before any files */
} parametricOption;
typedef const struct {
const char* name; /* name of option as specified by user */
boolean* pValue; /* pointer to option value */
boolean initOnly; /* option must be specified before any files */
} booleanOption;
/*
* DATA DEFINITIONS
*/
static boolean NonOptionEncountered;
static stringList *OptionFiles;
static stringList* Excluded;
static boolean FilesRequired = TRUE;
static boolean SkipConfiguration;
static const char *const HeaderExtensions [] = {
"h", "H", "hh", "hpp", "hxx", "h++", "inc", "def", NULL
};
optionValues Option = {
{
FALSE, /* --extra=f */
FALSE, /* --extra=q */
TRUE, /* --file-scope */
},
{
FALSE, /* -fields=a */
TRUE, /* -fields=f */
FALSE, /* -fields=m */
FALSE, /* -fields=i */
TRUE, /* -fields=k */
FALSE, /* -fields=z */
FALSE, /* -fields=K */
FALSE, /* -fields=l */
FALSE, /* -fields=n */
TRUE, /* -fields=s */
FALSE, /* -fields=S */
TRUE /* -fields=t */
},
NULL, /* -I */
FALSE, /* -a */
FALSE, /* -B */
FALSE, /* -e */
#ifdef MACROS_USE_PATTERNS
EX_PATTERN, /* -n, --excmd */
#else
EX_MIX, /* -n, --excmd */
#endif
FALSE, /* -R */
SO_SORTED, /* -u, --sort */
FALSE, /* -V */
FALSE, /* -x */
NULL, /* -L */
NULL, /* -o */
NULL, /* -h */
NULL, /* --etags-include */
DEFAULT_FILE_FORMAT,/* --format */
FALSE, /* --if0 */
FALSE, /* --kind-long */
LANG_AUTO, /* --lang */
TRUE, /* --links */
FALSE, /* --filter */
NULL, /* --filter-terminator */
FALSE, /* --tag-relative */
FALSE, /* --totals */
FALSE, /* --line-directives */
#ifdef DEBUG
0, 0 /* -D, -b */
#endif
};
/*
- Locally used only
*/
static optionDescription LongOptionDescription [] = {
{1," -a Append the tags to an existing tag file."},
#ifdef DEBUG
{1," -b <line>"},
{1," Set break line."},
#endif
{0," -B Use backward searching patterns (?...?)."},
#ifdef DEBUG
{1," -D <level>"},
{1," Set debug level."},
#endif
{0," -e Output tag file for use with Emacs."},
{1," -f <name>"},
{1," Write tags to specified file. Value of \"-\" writes tags to stdout"},
{1," [\"tags\"; or \"TAGS\" when -e supplied]."},
{0," -F Use forward searching patterns (/.../) (default)."},
{1," -h <list>"},
{1," Specify list of file extensions to be treated as include files."},
{1," [\".h.H.hh.hpp.hxx.h++\"]."},
{1," -I <list|@file>"},
{1," A list of tokens to be specially handled is read from either the"},
{1," command line or the specified file."},
{1," -L <file>"},
{1," A list of source file names are read from the specified file."},
{1," If specified as \"-\", then standard input is read."},
{0," -n Equivalent to --excmd=number."},
{0," -N Equivalent to --excmd=pattern."},
{1," -o Alternative for -f."},
#ifdef RECURSE_SUPPORTED
{1," -R Equivalent to --recurse."},
#else
{1," -R Not supported on this platform."},
#endif
{0," -u Equivalent to --sort=no."},
{1," -V Equivalent to --verbose."},
{1," -x Print a tabular cross reference file to standard output."},
{1," --append=[yes|no]"},
{1," Should tags should be appended to existing tag file [no]?"},
{1," --etags-include=file"},
{1," Include reference to 'file' in Emacs-style tag file (requires -e)."},
{1," --exclude=pattern"},
{1," Exclude files and directories matching 'pattern'."},
{0," --excmd=number|pattern|mix"},
#ifdef MACROS_USE_PATTERNS
{0," Uses the specified type of EX command to locate tags [pattern]."},
#else
{0," Uses the specified type of EX command to locate tags [mix]."},
#endif
{1," --extra=[+|-]flags"},
{1," Include extra tag entries for selected information (flags: \"fq\")."},
{1," --fields=[+|-]flags"},
{1," Include selected extension fields (flags: \"afmikKlnsStz\") [fks]."},
{1," --file-scope=[yes|no]"},
{1," Should tags scoped only for a single file (e.g. \"static\" tags"},
{1," be included in the output [yes]?"},
{1," --filter=[yes|no]"},
{1," Behave as a filter, reading file names from standard input and"},
{1," writing tags to standard output [no]."},
{1," --filter-terminator=string"},
{1," Specify string to print to stdout following the tags for each file"},
{1," parsed when --filter is enabled."},
{0," --format=level"},
#if DEFAULT_FILE_FORMAT == 1
{0," Force output of specified tag file format [1]."},
#else
{0," Force output of specified tag file format [2]."},
#endif
{1," --help"},
{1," Print this option summary."},
{1," --if0=[yes|no]"},
{1," Should C code within #if 0 conditional branches be parsed [no]?"},
{1," --<LANG>-kinds=[+|-]kinds"},
{1," Enable/disable tag kinds for language <LANG>."},
{1," --langdef=name"},
{1," Define a new language to be parsed with regular expressions."},
{1," --langmap=map(s)"},
{1," Override default mapping of language to source file extension."},
{1," --language-force=language"},
{1," Force all files to be interpreted using specified language."},
{1," --languages=[+|-]list"},
{1," Restrict files scanned for tags to those mapped to langauges"},
{1," specified in the comma-separated 'list'. The list can contain any"},
{1," built-in or user-defined language [all]."},
{1," --license"},
{1," Print details of software license."},
{0," --line-directives=[yes|no]"},
{0," Should #line directives be processed [no]?"},
{1," --links=[yes|no]"},
{1," Indicate whether symbolic links should be followed [yes]."},
{1," --list-kinds=[language|all]"},
{1," Output a list of all tag kinds for specified language or all."},
{1," --list-languages"},
{1," Output list of supported languages."},
{1," --list-maps=[language|all]"},
{1," Output list of language mappings."},
{1," --options=file"},
{1," Specify file from which command line options should be read."},
{1," --recurse=[yes|no]"},
#ifdef RECURSE_SUPPORTED
{1," Recurse into directories supplied on command line [no]."},
#else
{1," Not supported on this platform."},
#endif
#ifdef HAVE_REGEX
{1," --regex-<LANG>=/line_pattern/name_pattern/[flags]"},
{1," Define regular expression for locating tags in specific language."},
#endif
{0," --sort=[yes|no|foldcase]"},
{0," Should tags be sorted (optionally ignoring case) [yes]?."},
{0," --tag-relative=[yes|no]"},
{0," Should paths be relative to location of tag file [no; yes when -e]?"},
{1," --totals=[yes|no]"},
{1," Print statistics about source and tag files [no]."},
{1," --verbose=[yes|no]"},
{1," Enable verbose messages describing actions on each source file."},
{1," --version"},
{1," Print version identifier to standard output."},
{1, NULL}
};
static const char* const License1 =
"This program is free software; you can redistribute it and/or\n"
"modify it under the terms of the GNU General Public License\n"
"as published by the Free Software Foundation; either version 2\n"
"of the License, or (at your option) any later version.\n"
"\n";
static const char* const License2 =
"This program is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU General Public License\n"
"along with this program; if not, write to the Free Software\n"
"Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n";
/* Contains a set of strings describing the set of "features" compiled into
* the code.
*/
static const char *const Features [] = {
#ifdef WIN32
"win32",
#endif
#ifdef DJGPP
"msdos_32",
#else
# ifdef MSDOS
"msdos_16",
# endif
#endif
#ifdef OS2
"os2",
#endif
#ifdef AMIGA
"amiga",
#endif
#ifdef VMS
"vms",
#endif
#ifdef HAVE_FNMATCH
"wildcards",
#endif
#ifdef HAVE_REGEX
"regex",
#endif
#ifndef EXTERNAL_SORT
"internal-sort",
#endif
#ifdef CUSTOM_CONFIGURATION_FILE
"custom-conf",
#endif
#if (defined (MSDOS) || defined (WIN32) || defined (OS2)) && defined (UNIX_PATH_SEPARATOR)
"unix-path-separator",
#endif
#ifdef DEBUG
"debug",
#endif
NULL
};
/*
* FUNCTION PROTOTYPES
*/
static boolean parseFileOptions (const char *const fileName);
/*
* FUNCTION DEFINITIONS
*/
extern void verbose (const char *const format, ...)
{
if (Option.verbose)
{
va_list ap;
va_start (ap, format);
vprintf (format, ap);
va_end (ap);
}
}
static char *stringCopy (const char *const string)
{
char* result = NULL;
if (string != NULL)
result = eStrdup (string);
return result;
}
static void freeString (char **const pString)
{
if (*pString != NULL)
{
eFree (*pString);
*pString = NULL;
}
}
extern void freeList (stringList** const pList)
{
if (*pList != NULL)
{
stringListDelete (*pList);
*pList = NULL;
}
}
extern void setDefaultTagFileName (void)
{
if (Option.tagFileName != NULL)
; /* accept given name */
else if (Option.etags)
Option.tagFileName = stringCopy (ETAGS_FILE);
else
Option.tagFileName = stringCopy (CTAGS_FILE);
}
extern boolean filesRequired (void)
{
boolean result = FilesRequired;
if (Option.recurse || Option.stdinFileName)
result = FALSE;
return result;
}
extern void checkOptions (void)
{
const char* notice;
if (Option.xref)
{
notice = "xref output";
if (Option.include.fileNames)
{
error (WARNING, "%s disables file name tags", notice);
Option.include.fileNames = FALSE;
}
}
if (Option.append)
{
notice = "append mode is not compatible with";
if (isDestinationStdout ())
error (FATAL, "%s tags to stdout", notice);
}
if (Option.filter)
{
notice = "filter mode";
if (Option.printTotals)
{
error (WARNING, "%s disables totals", notice);
Option.printTotals = FALSE;
}
if (Option.tagFileName != NULL)
error (WARNING, "%s ignores output tag file name", notice);
}
}
static void setEtagsMode (void)
{
Option.etags = TRUE;
Option.sorted = SO_UNSORTED;
Option.lineDirectives = FALSE;
Option.tagRelative = TRUE;
}
extern void testEtagsInvocation (void)
{
char* const execName = eStrdup (getExecutableName ());
char* const etags = eStrdup (ETAGS);
#ifdef CASE_INSENSITIVE_FILENAMES
toLowerString (execName);
toLowerString (etags);
#endif
if (strstr (execName, etags) != NULL)
{
verbose ("Running in etags mode\n");
setEtagsMode ();
}
eFree (execName);
eFree (etags);
}
/*
* Cooked argument parsing
*/
static void parseShortOption (cookedArgs *const args)
{
args->simple [0] = *args->shortOptions++;
args->simple [1] = '\0';
args->item = args->simple;
if (! isCompoundOption (*args->simple))
args->parameter = "";
else if (*args->shortOptions == '\0')
{
argForth (args->args);
if (argOff (args->args))
args->parameter = NULL;
else
args->parameter = argItem (args->args);
args->shortOptions = NULL;
}
else
{
args->parameter = args->shortOptions;
args->shortOptions = NULL;
}
}
static void parseLongOption (cookedArgs *const args, const char *item)
{
const char* const equal = strchr (item, '=');
if (equal == NULL)
{
args->item = eStrdup (item); /* FIXME: memory leak. */
args->parameter = "";
}
else
{
const size_t length = equal - item;
args->item = xMalloc (length + 1, char); /* FIXME: memory leak. */
strncpy (args->item, item, length);
args->item [length] = '\0';
args->parameter = equal + 1;
}
Assert (args->item != NULL);
Assert (args->parameter != NULL);
}
static void cArgRead (cookedArgs *const current)
{
char* item;
Assert (current != NULL);
if (! argOff (current->args))
{
item = argItem (current->args);
current->shortOptions = NULL;
Assert (item != NULL);
if (strncmp (item, "--", (size_t) 2) == 0)
{
current->isOption = TRUE;
current->longOption = TRUE;
parseLongOption (current, item + 2);
Assert (current->item != NULL);
Assert (current->parameter != NULL);
}
else if (*item == '-')
{
current->isOption = TRUE;
current->longOption = FALSE;
current->shortOptions = item + 1;
parseShortOption (current);
}
else
{
current->isOption = FALSE;
current->longOption = FALSE;
current->item = item;
current->parameter = NULL;
}
}
}
extern cookedArgs* cArgNewFromString (const char* string)
{
cookedArgs* const result = xMalloc (1, cookedArgs);
memset (result, 0, sizeof (cookedArgs));
result->args = argNewFromString (string);
cArgRead (result);
return result;
}
extern cookedArgs* cArgNewFromArgv (char* const* const argv)
{
cookedArgs* const result = xMalloc (1, cookedArgs);
memset (result, 0, sizeof (cookedArgs));
result->args = argNewFromArgv (argv);
cArgRead (result);
return result;
}
extern cookedArgs* cArgNewFromFile (FILE* const fp)
{
cookedArgs* const result = xMalloc (1, cookedArgs);
memset (result, 0, sizeof (cookedArgs));
result->args = argNewFromFile (fp);
cArgRead (result);
return result;
}
extern cookedArgs* cArgNewFromLineFile (FILE* const fp)
{
cookedArgs* const result = xMalloc (1, cookedArgs);
memset (result, 0, sizeof (cookedArgs));
result->args = argNewFromLineFile (fp);
cArgRead (result);
return result;
}
extern void cArgDelete (cookedArgs* const current)
{
Assert (current != NULL);
argDelete (current->args);
memset (current, 0, sizeof (cookedArgs));
eFree (current);
}
static boolean cArgOptionPending (cookedArgs* const current)
{
boolean result = FALSE;
if (current->shortOptions != NULL)
if (*current->shortOptions != '\0')
result = TRUE;
return result;
}
extern boolean cArgOff (cookedArgs* const current)
{
Assert (current != NULL);
return (boolean) (argOff (current->args) && ! cArgOptionPending (current));
}
extern boolean cArgIsOption (cookedArgs* const current)
{
Assert (current != NULL);
return current->isOption;
}
extern const char* cArgItem (cookedArgs* const current)
{
Assert (current != NULL);
return current->item;
}
extern void cArgForth (cookedArgs* const current)
{
Assert (current != NULL);
Assert (! cArgOff (current));
if (cArgOptionPending (current))
parseShortOption (current);
else
{
Assert (! argOff (current->args));
argForth (current->args);
if (! argOff (current->args))
cArgRead (current);
else
{
current->isOption = FALSE;
current->longOption = FALSE;
current->shortOptions = NULL;
current->item = NULL;
current->parameter = NULL;
}
}
}
/*
* File extension and language mapping
*/
static void addExtensionList (
stringList *const slist, const char *const elist, const boolean clear)
{
char *const extensionList = eStrdup (elist);
const char *extension = NULL;
boolean first = TRUE;
if (clear)
{
verbose (" clearing\n");
stringListClear (slist);
}
verbose (" adding: ");
if (elist != NULL && *elist != '\0')
{
extension = extensionList;
if (elist [0] == EXTENSION_SEPARATOR)
++extension;
}
while (extension != NULL)
{
char *separator = strchr (extension, EXTENSION_SEPARATOR);
if (separator != NULL)
*separator = '\0';
verbose ("%s%s", first ? "" : ", ",
*extension == '\0' ? "(NONE)" : extension);
stringListAdd (slist, vStringNewInit (extension));
first = FALSE;
if (separator == NULL)
extension = NULL;
else
extension = separator + 1;
}
if (Option.verbose)
{
printf ("\n now: ");
stringListPrint (slist);
putchar ('\n');
}
eFree (extensionList);
}
static boolean isFalse (const char *parameter)
{
return (boolean) (
strcasecmp (parameter, "0" ) == 0 ||
strcasecmp (parameter, "n" ) == 0 ||
strcasecmp (parameter, "no" ) == 0 ||
strcasecmp (parameter, "off") == 0);
}
static boolean isTrue (const char *parameter)
{
return (boolean) (
strcasecmp (parameter, "1" ) == 0 ||
strcasecmp (parameter, "y" ) == 0 ||
strcasecmp (parameter, "yes") == 0 ||
strcasecmp (parameter, "on" ) == 0);
}
/* Determines whether the specified file name is considered to be a header
* file for the purposes of determining whether enclosed tags are global or
* static.
*/
extern boolean isIncludeFile (const char *const fileName)
{
boolean result = FALSE;
const char *const extension = fileExtension (fileName);
if (Option.headerExt != NULL)
result = stringListExtensionMatched (Option.headerExt, extension);
return result;
}
/*
* Specific option processing
*/
static void processEtagsInclude (
const char *const option, const char *const parameter)
{
if (! Option.etags)
error (FATAL, "Etags must be enabled to use \"%s\" option", option);
else
{
vString *const file = vStringNewInit (parameter);
if (Option.etagsInclude == NULL)
Option.etagsInclude = stringListNew ();
stringListAdd (Option.etagsInclude, file);
FilesRequired = FALSE;
}
}
static void processExcludeOption (
const char *const option __unused__, const char *const parameter)
{
const char *const fileName = parameter + 1;
if (parameter [0] == '\0')
freeList (&Excluded);
else if (parameter [0] == '@')
{
stringList* const sl = stringListNewFromFile (fileName);
if (sl == NULL)
error (FATAL | PERROR, "cannot open \"%s\"", fileName);
if (Excluded == NULL)
Excluded = sl;
else
stringListCombine (Excluded, sl);
verbose (" adding exclude patterns from %s\n", fileName);
}
else
{
vString *const item = vStringNewInit (parameter);
if (Excluded == NULL)
Excluded = stringListNew ();
stringListAdd (Excluded, item);
verbose (" adding exclude pattern: %s\n", parameter);
}
}
extern boolean isExcludedFile (const char* const name)
{
const char* base = baseFilename (name);
boolean result = FALSE;
if (Excluded != NULL)
{
result = stringListFileMatched (Excluded, base);
if (! result && name != base)
result = stringListFileMatched (Excluded, name);
}
#ifdef AMIGA
/* not a good solution, but the only one which works often */
if (! result)
result = (boolean) (strcmp (name, TagFile.name) == 0);
#endif
return result;
}
static void processExcmdOption (
const char *const option, const char *const parameter)
{
switch (*parameter)
{
case 'm': Option.locate = EX_MIX; break;
case 'n': Option.locate = EX_LINENUM; break;
case 'p': Option.locate = EX_PATTERN; break;
default:
error (FATAL, "Invalid value for \"%s\" option", option);
break;
}
}
static void processExtraTagsOption (
const char *const option, const char *const parameter)
{
struct sInclude *const inc = &Option.include;
const char *p = parameter;
boolean mode = TRUE;
int c;
if (*p != '+' && *p != '-')
{
inc->fileNames = FALSE;
inc->qualifiedTags = FALSE;
#if 0
inc->fileScope = FALSE;
#endif
}
while ((c = *p++) != '\0') switch (c)
{
case '+': mode = TRUE; break;
case '-': mode = FALSE; break;
case 'f': inc->fileNames = mode; break;
case 'q': inc->qualifiedTags = mode; break;
#if 0
case 'F': inc->fileScope = mode; break;
#endif
default: error(WARNING, "Unsupported parameter '%c' for \"%s\" option",
c, option);
break;
}
}
static void processFieldsOption (
const char *const option, const char *const parameter)
{
struct sExtFields *field = &Option.extensionFields;
const char *p = parameter;
boolean mode = TRUE;
int c;
if (*p != '+' && *p != '-')
{
field->access = FALSE;
field->fileScope = FALSE;
field->implementation = FALSE;
field->inheritance = FALSE;
field->kind = FALSE;
field->kindKey = FALSE;
field->kindLong = FALSE;
field->language = FALSE;
field->scope = FALSE;
field->typeRef = FALSE;
}
while ((c = *p++) != '\0') switch (c)
{
case '+': mode = TRUE; break;
case '-': mode = FALSE; break;
case 'a': field->access = mode; break;
case 'f': field->fileScope = mode; break;
case 'm': field->implementation = mode; break;
case 'i': field->inheritance = mode; break;
case 'k': field->kind = mode; break;
case 'K': field->kindLong = mode; break;
case 'l': field->language = mode; break;
case 'n': field->lineNumber = mode; break;
case 's': field->scope = mode; break;
case 'S': field->signature = mode; break;
case 'z': field->kindKey = mode; break;
case 't': field->typeRef = mode; break;
default: error(WARNING, "Unsupported parameter '%c' for \"%s\" option",
c, option);
break;
}
}
static void processFilterTerminatorOption (
const char *const option __unused__, const char *const parameter)
{
freeString (&Option.filterTerminator);
Option.filterTerminator = stringCopy (parameter);
}
static void processFormatOption (
const char *const option, const char *const parameter)
{
unsigned int format;
if (sscanf (parameter, "%u", &format) < 1)
error (FATAL, "Invalid value for \"%s\" option",option);
else if (format <= (unsigned int) MaxSupportedTagFormat)
Option.tagFileFormat = format;
else
error (FATAL, "Unsupported value for \"%s\" option", option);
}
static void printInvocationDescription (void)
{
printf (INVOCATION, getExecutableName ());
}
static void printOptionDescriptions (const optionDescription *const optDesc)
{
int i;
for (i = 0 ; optDesc [i].description != NULL ; ++i)
{
if (! Option.etags || optDesc [i].usedByEtags)
puts (optDesc [i].description);
}
}
static void printFeatureList (void)
{
int i;
for (i = 0 ; Features [i] != NULL ; ++i)
{
if (i == 0)
printf (" Optional compiled features: ");
printf ("%s+%s", (i>0 ? ", " : ""), Features [i]);
#ifdef CUSTOM_CONFIGURATION_FILE
if (strcmp (Features [i], "custom-conf") == 0)
printf ("=%s", CUSTOM_CONFIGURATION_FILE);
#endif
}
if (i > 0)
putchar ('\n');
}
static void printProgramIdentification (void)
{
printf ("%s %s, %s %s\n",
PROGRAM_NAME, PROGRAM_VERSION,
PROGRAM_COPYRIGHT, AUTHOR_NAME);
printf (" Compiled: %s, %s\n", __DATE__, __TIME__);
printf (" Addresses: <%s>, %s\n", AUTHOR_EMAIL, PROGRAM_URL);
printFeatureList ();
}
static void processHelpOption (
const char *const option __unused__,
const char *const parameter __unused__)
{
printProgramIdentification ();
putchar ('\n');
printInvocationDescription ();
putchar ('\n');
printOptionDescriptions (LongOptionDescription);
exit (0);
}
static void processLanguageForceOption (
const char *const option, const char *const parameter)
{
langType language;
if (strcasecmp (parameter, "auto") == 0)
language = LANG_AUTO;
else
language = getNamedLanguage (parameter);
if (strcmp (option, "lang") == 0 || strcmp (option, "language") == 0)
error (WARNING,
"\"--%s\" option is obsolete; use \"--language-force\" instead",
option);
if (language == LANG_IGNORE)
error (FATAL, "Unknown language \"%s\" in \"%s\" option", parameter, option);
else
Option.language = language;
}
static void processStdinFileName (
const char *const option, const char *const parameter)
{
if (strlen(parameter) == 0) {
error (FATAL, "No filename specified for --stdin-filename");
}
Option.stdinFileName = stringCopy(parameter);
}
static char* skipPastMap (char* p)
{
while (*p != EXTENSION_SEPARATOR &&
*p != PATTERN_START && *p != ',' && *p != '\0')
++p;
return p;
}
/* Parses the mapping beginning at `map', adds it to the language map, and
* returns first character past the map.
*/
static char* addLanguageMap (const langType language, char* map)
{
char* p = NULL;
const char first = *map;
if (first == EXTENSION_SEPARATOR) /* extension map */
{
++map;
p = skipPastMap (map);
if (*p == '\0')
{
verbose (" .%s", map);
addLanguageExtensionMap (language, map);
p = map + strlen (map);
}
else
{
const char separator = *p;