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arts/flow/gsl/gslglib.c

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#include "gsl/gslglib.h"
#include "gsl/gsldefs.h"
#include <locale.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#define GLIB_SIZEOF_INTMAX (GSL_SIZEOF_STD_INTMAX_T ? GSL_SIZEOF_STD_INTMAX_T : 8 /* educated guess */)
gpointer g_malloc (gulong n_bytes) { void*p = malloc(n_bytes); GSL_ASSERT(p!=0); return p; }
gpointer g_malloc0 (gulong n_bytes) { return memset(g_malloc(n_bytes),0,n_bytes); }
gpointer g_realloc (gpointer mem,
gulong n_bytes) { void*p = realloc(mem,n_bytes); GSL_ASSERT(p!=0); return p; }
void g_free (gpointer mem) { if (mem) free(mem); }
void g_usleep (unsigned long usec) { usleep (usec); }
char* g_strerror(int e) { return strerror (e); }
gpointer g_memdup (gconstpointer mem, guint byte_size) { gpointer new_mem; if (mem) { new_mem = g_malloc (byte_size); memcpy (new_mem, mem, byte_size); } else new_mem = NULL; return new_mem; }
gchar* g_strdup (const gchar *str) { gchar *new_str; if (str) { new_str = g_new (char, strlen (str) + 1); strcpy (new_str, str); } else new_str = NULL; return new_str; }
gchar* g_strndup (const gchar *str, gsize n) { gchar *new_str; if (str) { new_str = g_new (gchar, n + 1); strncpy (new_str, str, n); new_str[n] = '\0'; } else new_str = NULL; return new_str; }
gchar*g_strconcat (const gchar *string1, ...){ gsize l; va_list args; gchar *s; gchar *concat; gchar *ptr; g_return_val_if_fail (string1 != NULL, NULL); l = 1 + strlen (string1); va_start (args, string1); s = va_arg (args, gchar*); while (s) { l += strlen (s); s = va_arg (args, gchar*); } va_end (args); concat = g_new (gchar, l); ptr = concat; ptr = g_stpcpy (ptr, string1); va_start (args, string1); s = va_arg (args, gchar*); while (s) { ptr = g_stpcpy (ptr, s); s = va_arg (args, gchar*); } va_end (args); return concat; }
gchar*
g_strdup_printf (const gchar *format,
...)
{
gchar *buffer;
va_list args;
va_start (args, format);
buffer = g_strdup_vprintf (format, args);
va_end (args);
return buffer;
}
gchar*
g_strdup_vprintf (const gchar *format,
va_list args1)
{
gchar *buffer;
#ifdef HAVE_VASPRINTF
if (vasprintf (&buffer, format, args1) < 0)
buffer = NULL;
#else
va_list args2;
G_VA_COPY (args2, args1);
buffer = g_new (gchar, g_printf_string_upper_bound (format, args1));
vsprintf (buffer, format, args2);
va_end (args2);
#endif
return buffer;
}
gchar *
g_stpcpy (gchar *dest,
const gchar *src)
{
#ifdef GLIB_HAVE_STPCPY
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
return stpcpy (dest, src);
#else
register gchar *d = dest;
register const gchar *s = src;
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
do
*d++ = *s;
while (*s++ != '\0');
return d - 1;
#endif
}
gchar *
g_strescape (const gchar *source,
const gchar *exceptions)
{
const guchar *p;
gchar *dest;
gchar *q;
guchar excmap[256];
g_return_val_if_fail (source != NULL, NULL);
p = (guchar *) source;
/* Each source byte needs maximally four destination chars (\777) */
q = dest = g_malloc (strlen (source) * 4 + 1);
memset (excmap, 0, 256);
if (exceptions)
{
guchar *e = (guchar *) exceptions;
while (*e)
{
excmap[*e] = 1;
e++;
}
}
while (*p)
{
if (excmap[*p])
*q++ = *p;
else
{
switch (*p)
{
case '\b':
*q++ = '\\';
*q++ = 'b';
break;
case '\f':
*q++ = '\\';
*q++ = 'f';
break;
case '\n':
*q++ = '\\';
*q++ = 'n';
break;
case '\r':
*q++ = '\\';
*q++ = 'r';
break;
case '\t':
*q++ = '\\';
*q++ = 't';
break;
case '\\':
*q++ = '\\';
*q++ = '\\';
break;
case '"':
*q++ = '\\';
*q++ = '"';
break;
default:
if ((*p < ' ') || (*p >= 0177))
{
*q++ = '\\';
*q++ = '0' + (((*p) >> 6) & 07);
*q++ = '0' + (((*p) >> 3) & 07);
*q++ = '0' + ((*p) & 07);
}
else
*q++ = *p;
break;
}
}
p++;
}
*q = 0;
return dest;
}
guint g_direct_hash (gconstpointer v) { return GPOINTER_TO_UINT (v); }
gboolean g_direct_equal (gconstpointer v1, gconstpointer v2) { return v1 == v2; }
gboolean g_str_equal (gconstpointer v1, gconstpointer v2) { const gchar *string1 = v1; const gchar *string2 = v2; return strcmp (string1, string2) == 0; }
guint g_str_hash (gconstpointer key) { const char *p = key; guint h = *p; if (h) for (p += 1; *p != '\0'; p++) h = (h << 5) - h + *p; return h; }
void
gsl_g_log (const gchar*msg,const char *format, va_list ap)
{
if (msg) printf ("\n%s",msg);
vprintf(format, ap);
if (msg) printf ("\n");
}
void
gsl_g_print_fd (int fd, const char *format, va_list ap)
{
g_return_if_fail (fd == 1 || fd == 2);
if (fd == 1)
vprintf (format, ap);
else
vfprintf (stderr, format, ap);
}
gchar*
gsl_g_convert (const gchar *str,
gsize len, /* gssize */
const gchar *to_codeset,
const gchar *from_codeset,
gsize *bytes_read,
gsize *bytes_written,
void **error) /* GError */
{
g_error ("g_convert not implemented");
/* not reached: */
return 0;
}
/* --- GScanner --- */
#ifdef HAVE_SNPRINTF
/* FIXME: might want to do the configure test in gsl instead of arts */
#define g_snprintf snprintf
#else
#define g_snprintf gsl_g_snprintf
static void
gsl_g_snprintf (gchar *out_buffer,
size_t size,
const gchar *format,
...)
{
gchar *buffer;
va_list args;
/* print string into large enough buffer */
va_start (args, format);
buffer = g_strdup_printf (format, args);
va_end (args);
/* copy the first size bytes into out_buffer */
strncpy (out_buffer, buffer, size);
out_buffer[ size - 1 ] = '\0';
g_free (buffer);
}
#endif
struct _GString
{
gchar *str;
guint len;
};
static GString*
g_string_new(const gchar* s)
{
GString *gstr=g_new0(GString,1);
gstr->str= g_strdup(s);
gstr->len=strlen(s);
return gstr;
}
static GString*
g_string_append_c(GString*gstr, int ch)
{
gstr->str=g_renew(gchar,gstr->str,++gstr->len + 1);
gstr->str[gstr->len-1]=ch;
gstr->str[gstr->len]=0;
return gstr;
}
static void
g_string_free(GString*gstr, int freeme)
{
if(freeme)g_free(gstr->str);g_free(gstr);
}
/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GScanner: Flexible lexical scanner for general purpose.
* Copyright (C) 1997, 1998 Tim Janik
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
/*
* MT safe
*/
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
/* --- defines --- */
#define to_lower(c) ( \
(guchar) ( \
( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
((guchar)(c)) \
) \
)
#define READ_BUFFER_SIZE (4000)
/* --- typedefs --- */
typedef struct _GScannerKey GScannerKey;
struct _GScannerKey
{
guint scope_id;
gchar *symbol;
gpointer value;
};
/* --- variables --- */
#define g_scanner_config_template _cplusplus_wont_have_a_problem_with_this_foog_scanner_config_template
static GScannerConfig g_scanner_config_template =
{
(
" \t\r\n"
) /* cset_skip_characters */,
(
G_CSET_a_2_z
"_"
G_CSET_A_2_Z
) /* cset_identifier_first */,
(
G_CSET_a_2_z
"_"
G_CSET_A_2_Z
G_CSET_DIGITS
G_CSET_LATINS
G_CSET_LATINC
) /* cset_identifier_nth */,
( "#\n" ) /* cpair_comment_single */,
FALSE /* case_sensitive */,
TRUE /* skip_comment_multi */,
TRUE /* skip_comment_single */,
TRUE /* scan_comment_multi */,
TRUE /* scan_identifier */,
FALSE /* scan_identifier_1char */,
FALSE /* scan_identifier_NULL */,
TRUE /* scan_symbols */,
FALSE /* scan_binary */,
TRUE /* scan_octal */,
TRUE /* scan_float */,
TRUE /* scan_hex */,
FALSE /* scan_hex_dollar */,
TRUE /* scan_string_sq */,
TRUE /* scan_string_dq */,
TRUE /* numbers_2_int */,
FALSE /* int_2_float */,
FALSE /* identifier_2_string */,
TRUE /* char_2_token */,
FALSE /* symbol_2_token */,
FALSE /* scope_0_fallback */,
};
/* --- prototypes --- */
static inline
GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
guint scope_id,
const gchar *symbol);
static gboolean g_scanner_key_equal (gconstpointer v1,
gconstpointer v2);
static guint g_scanner_key_hash (gconstpointer v);
static void g_scanner_get_token_ll (GScanner *scanner,
GTokenType *token_p,
GTokenValue *value_p,
guint *line_p,
guint *position_p);
static void g_scanner_get_token_i (GScanner *scanner,
GTokenType *token_p,
GTokenValue *value_p,
guint *line_p,
guint *position_p);
static guchar g_scanner_peek_next_char (GScanner *scanner);
static guchar g_scanner_get_char (GScanner *scanner,
guint *line_p,
guint *position_p);
static void g_scanner_msg_handler (GScanner *scanner,
gchar *message,
gint is_error);
/* --- functions --- */
static inline gint
g_scanner_char_2_num (guchar c,
guchar base)
{
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'A' && c <= 'Z')
c -= 'A' - 10;
else if (c >= 'a' && c <= 'z')
c -= 'a' - 10;
else
return -1;
if (c < base)
return c;
return -1;
}
GScanner*
g_scanner_new (const GScannerConfig *config_templ)
{
GScanner *scanner;
if (!config_templ)
config_templ = &g_scanner_config_template;
scanner = g_new0 (GScanner, 1);
scanner->user_data = NULL;
scanner->max_parse_errors = 0;
scanner->parse_errors = 0;
scanner->input_name = NULL;
/* g_datalist_init (&scanner->qdata); */
scanner->config = g_new0 (GScannerConfig, 1);
scanner->config->case_sensitive = config_templ->case_sensitive;
scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
if (!scanner->config->cset_skip_characters)
scanner->config->cset_skip_characters = "";
scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
scanner->config->skip_comment_single = config_templ->skip_comment_single;
scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
scanner->config->scan_identifier = config_templ->scan_identifier;
scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
scanner->config->scan_symbols = config_templ->scan_symbols;
scanner->config->scan_binary = config_templ->scan_binary;
scanner->config->scan_octal = config_templ->scan_octal;
scanner->config->scan_float = config_templ->scan_float;
scanner->config->scan_hex = config_templ->scan_hex;
scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
scanner->config->scan_string_sq = config_templ->scan_string_sq;
scanner->config->scan_string_dq = config_templ->scan_string_dq;
scanner->config->numbers_2_int = config_templ->numbers_2_int;
scanner->config->int_2_float = config_templ->int_2_float;
scanner->config->identifier_2_string = config_templ->identifier_2_string;
scanner->config->char_2_token = config_templ->char_2_token;
scanner->config->symbol_2_token = config_templ->symbol_2_token;
scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->next_value.v_int = 0;
scanner->next_line = 1;
scanner->next_position = 0;
scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
scanner->input_fd = -1;
scanner->text = NULL;
scanner->text_end = NULL;
scanner->buffer = NULL;
scanner->scope_id = 0;
scanner->msg_handler = g_scanner_msg_handler;
return scanner;
}
static inline void
g_scanner_free_value (GTokenType *token_p,
GTokenValue *value_p)
{
switch (*token_p)
{
case G_TOKEN_STRING:
case G_TOKEN_IDENTIFIER:
case G_TOKEN_IDENTIFIER_NULL:
case G_TOKEN_COMMENT_SINGLE:
case G_TOKEN_COMMENT_MULTI:
g_free (value_p->v_string);
break;
default:
break;
}
*token_p = G_TOKEN_NONE;
}
static void
g_scanner_destroy_symbol_table_entry (gpointer _key,
gpointer _value,
gpointer _data)
{
GScannerKey *key = _key;
g_free (key->symbol);
g_free (key);
}
void
g_scanner_destroy (GScanner *scanner)
{
g_return_if_fail (scanner != NULL);
/* g_datalist_clear (&scanner->qdata); */
g_hash_table_foreach (scanner->symbol_table,
g_scanner_destroy_symbol_table_entry, NULL);
g_hash_table_destroy (scanner->symbol_table);
g_scanner_free_value (&scanner->token, &scanner->value);
g_scanner_free_value (&scanner->next_token, &scanner->next_value);
g_free (scanner->config);
g_free (scanner->buffer);
g_free (scanner);
}
static void
g_scanner_msg_handler (GScanner *scanner,
gchar *message,
gint is_error)
{
g_return_if_fail (scanner != NULL);
fprintf (stderr, "%s:%d: ", scanner->input_name, scanner->line);
if (is_error)
fprintf (stderr, "error: ");
fprintf (stderr, "%s\n", message);
}
void
g_scanner_error (GScanner *scanner,
const gchar *format,
...)
{
g_return_if_fail (scanner != NULL);
g_return_if_fail (format != NULL);
scanner->parse_errors++;
if (scanner->msg_handler)
{
va_list args;
gchar *string;
va_start (args, format);
string = g_strdup_vprintf (format, args);
va_end (args);
scanner->msg_handler (scanner, string, TRUE);
g_free (string);
}
}
void
g_scanner_warn (GScanner *scanner,
const gchar *format,
...)
{
g_return_if_fail (scanner != NULL);
g_return_if_fail (format != NULL);
if (scanner->msg_handler)
{
va_list args;
gchar *string;
va_start (args, format);
string = g_strdup_vprintf (format, args);
va_end (args);
scanner->msg_handler (scanner, string, FALSE);
g_free (string);
}
}
static gboolean
g_scanner_key_equal (gconstpointer v1,
gconstpointer v2)
{
const GScannerKey *key1 = v1;
const GScannerKey *key2 = v2;
return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
}
static guint
g_scanner_key_hash (gconstpointer v)
{
const GScannerKey *key = v;
gchar *c;
guint h;
h = key->scope_id;
for (c = key->symbol; *c; c++)
h = (h << 5) - h + *c;
return h;
}
static inline GScannerKey*
g_scanner_lookup_internal (GScanner *scanner,
guint scope_id,
const gchar *symbol)
{
GScannerKey *key_p;
GScannerKey key;
key.scope_id = scope_id;
if (!scanner->config->case_sensitive)
{
gchar *d;
const gchar *c;
key.symbol = g_new (gchar, strlen (symbol) + 1);
for (d = key.symbol, c = symbol; *c; c++, d++)
*d = to_lower (*c);
*d = 0;
key_p = g_hash_table_lookup (scanner->symbol_table, &key);
g_free (key.symbol);
}
else
{
key.symbol = (gchar*) symbol;
key_p = g_hash_table_lookup (scanner->symbol_table, &key);
}
return key_p;
}
void
g_scanner_scope_add_symbol (GScanner *scanner,
guint scope_id,
const gchar *symbol,
gpointer value)
{
GScannerKey *key;
g_return_if_fail (scanner != NULL);
g_return_if_fail (symbol != NULL);
key = g_scanner_lookup_internal (scanner, scope_id, symbol);
if (!key)
{
key = g_new (GScannerKey, 1);
key->scope_id = scope_id;
key->symbol = g_strdup (symbol);
key->value = value;
if (!scanner->config->case_sensitive)
{
gchar *c;
c = key->symbol;
while (*c != 0)
{
*c = to_lower (*c);
c++;
}
}
g_hash_table_insert (scanner->symbol_table, key, key);
}
else
key->value = value;
}
void
g_scanner_scope_remove_symbol (GScanner *scanner,
guint scope_id,
const gchar *symbol)
{
GScannerKey *key;
g_return_if_fail (scanner != NULL);
g_return_if_fail (symbol != NULL);
key = g_scanner_lookup_internal (scanner, scope_id, symbol);
if (key)
{
g_hash_table_remove (scanner->symbol_table, key);
g_free (key->symbol);
g_free (key);
}
}
gpointer
g_scanner_lookup_symbol (GScanner *scanner,
const gchar *symbol)
{
GScannerKey *key;
guint scope_id;
g_return_val_if_fail (scanner != NULL, NULL);
if (!symbol)
return NULL;
scope_id = scanner->scope_id;
key = g_scanner_lookup_internal (scanner, scope_id, symbol);
if (!key && scope_id && scanner->config->scope_0_fallback)
key = g_scanner_lookup_internal (scanner, 0, symbol);
if (key)
return key->value;
else
return NULL;
}
gpointer
g_scanner_scope_lookup_symbol (GScanner *scanner,
guint scope_id,
const gchar *symbol)
{
GScannerKey *key;
g_return_val_if_fail (scanner != NULL, NULL);
if (!symbol)
return NULL;
key = g_scanner_lookup_internal (scanner, scope_id, symbol);
if (key)
return key->value;
else
return NULL;
}
guint
g_scanner_set_scope (GScanner *scanner,
guint scope_id)
{
guint old_scope_id;
g_return_val_if_fail (scanner != NULL, 0);
old_scope_id = scanner->scope_id;
scanner->scope_id = scope_id;
return old_scope_id;
}
static void
g_scanner_foreach_internal (gpointer _key,
gpointer _value,
gpointer _user_data)
{
GScannerKey *key;
gpointer *d;
GHFunc func;
gpointer user_data;
guint *scope_id;
d = _user_data;
func = (GHFunc) d[0];
user_data = d[1];
scope_id = d[2];
key = _value;
if (key->scope_id == *scope_id)
func (key->symbol, key->value, user_data);
}
void
g_scanner_scope_foreach_symbol (GScanner *scanner,
guint scope_id,
GHFunc func,
gpointer user_data)
{
gpointer d[3];
g_return_if_fail (scanner != NULL);
d[0] = (gpointer) func;
d[1] = user_data;
d[2] = &scope_id;
g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
}
GTokenType
g_scanner_peek_next_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
if (scanner->next_token == G_TOKEN_NONE)
{
scanner->next_line = scanner->line;
scanner->next_position = scanner->position;
g_scanner_get_token_i (scanner,
&scanner->next_token,
&scanner->next_value,
&scanner->next_line,
&scanner->next_position);
}
return scanner->next_token;
}
GTokenType
g_scanner_get_next_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
if (scanner->next_token != G_TOKEN_NONE)
{
g_scanner_free_value (&scanner->token, &scanner->value);
scanner->token = scanner->next_token;
scanner->value = scanner->next_value;
scanner->line = scanner->next_line;
scanner->position = scanner->next_position;
scanner->next_token = G_TOKEN_NONE;
}
else
g_scanner_get_token_i (scanner,
&scanner->token,
&scanner->value,
&scanner->line,
&scanner->position);
return scanner->token;
}
GTokenType
g_scanner_cur_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
return scanner->token;
}
GTokenValue
g_scanner_cur_value (GScanner *scanner)
{
GTokenValue v;
v.v_int = 0;
g_return_val_if_fail (scanner != NULL, v);
/* MSC isn't capable of handling return scanner->value; ? */
v = scanner->value;
return v;
}
guint
g_scanner_cur_line (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, 0);
return scanner->line;
}
guint
g_scanner_cur_position (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, 0);
return scanner->position;
}
gboolean
g_scanner_eof (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, TRUE);
return scanner->token == G_TOKEN_EOF;
}
void
g_scanner_input_file (GScanner *scanner,
gint input_fd)
{
g_return_if_fail (scanner != NULL);
g_return_if_fail (input_fd >= 0);
if (scanner->input_fd >= 0)
g_scanner_sync_file_offset (scanner);
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->input_fd = input_fd;
scanner->text = NULL;
scanner->text_end = NULL;
if (!scanner->buffer)
scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
}
void
g_scanner_input_text (GScanner *scanner,
const gchar *text,
guint text_len)
{
g_return_if_fail (scanner != NULL);
if (text_len)
g_return_if_fail (text != NULL);
else
text = NULL;
if (scanner->input_fd >= 0)
g_scanner_sync_file_offset (scanner);
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->input_fd = -1;
scanner->text = text;
scanner->text_end = text + text_len;
if (scanner->buffer)
{
g_free (scanner->buffer);
scanner->buffer = NULL;
}
}
static guchar
g_scanner_peek_next_char (GScanner *scanner)
{
if (scanner->text < scanner->text_end)
{
return *scanner->text;
}
else if (scanner->input_fd >= 0)
{
gint count;
gchar *buffer;
buffer = scanner->buffer;
do
{
count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
}
while (count == -1 && (errno == EINTR || errno == EAGAIN));
if (count < 1)
{
scanner->input_fd = -1;
return 0;
}
else
{
scanner->text = buffer;
scanner->text_end = buffer + count;
return *buffer;
}
}
else
return 0;
}
void
g_scanner_sync_file_offset (GScanner *scanner)
{
g_return_if_fail (scanner != NULL);
/* for file input, rewind the filedescriptor to the current
* buffer position and blow the file read ahead buffer. useful for
* third party uses of our filedescriptor, which hooks onto the current
* scanning position.
*/
if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
{
gint buffered;
buffered = scanner->text_end - scanner->text;
if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
{
/* we succeeded, blow our buffer's contents now */
scanner->text = NULL;
scanner->text_end = NULL;
}
else
errno = 0;
}
}
static guchar
g_scanner_get_char (GScanner *scanner,
guint *line_p,
guint *position_p)
{
guchar fchar;
if (scanner->text < scanner->text_end)
fchar = *(scanner->text++);
else if (scanner->input_fd >= 0)
{
gint count;
gchar *buffer;
buffer = scanner->buffer;
do
{
count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
}
while (count == -1 && (errno == EINTR || errno == EAGAIN));
if (count < 1)
{
scanner->input_fd = -1;
fchar = 0;
}
else
{
scanner->text = buffer + 1;
scanner->text_end = buffer + count;
fchar = *buffer;
if (!fchar)
{
g_scanner_sync_file_offset (scanner);
scanner->text_end = scanner->text;
scanner->input_fd = -1;
}
}
}
else
fchar = 0;
if (fchar == '\n')
{
(*position_p) = 0;
(*line_p)++;
}
else if (fchar)
{
(*position_p)++;
}
return fchar;
}
void
g_scanner_unexp_token (GScanner *scanner,
GTokenType expected_token,
const gchar *identifier_spec,
const gchar *symbol_spec,
const gchar *symbol_name,
const gchar *message,
gint is_error)
{
gchar *token_string;
guint token_string_len;
gchar *expected_string;
guint expected_string_len;
const gchar *message_prefix;
gboolean print_unexp;
void (*msg_handler) (GScanner*, const gchar*, ...);
g_return_if_fail (scanner != NULL);
if (is_error)
msg_handler = g_scanner_error;
else
msg_handler = g_scanner_warn;
if (!identifier_spec)
identifier_spec = "identifier";
if (!symbol_spec)
symbol_spec = "symbol";
token_string_len = 56;
token_string = g_new (gchar, token_string_len + 1);
expected_string_len = 64;
expected_string = g_new (gchar, expected_string_len + 1);
print_unexp = TRUE;
switch (scanner->token)
{
case G_TOKEN_EOF:
g_snprintf (token_string, token_string_len, "end of file");
break;
default:
if (scanner->token >= 1 && scanner->token <= 255)
{
if ((scanner->token >= ' ' && scanner->token <= '~') ||
strchr (scanner->config->cset_identifier_first, scanner->token) ||
strchr (scanner->config->cset_identifier_nth, scanner->token))
g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
else
g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
break;
}
else if (!scanner->config->symbol_2_token)
{
g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
break;
}
/* fall through */
case G_TOKEN_SYMBOL:
if (expected_token == G_TOKEN_SYMBOL ||
(scanner->config->symbol_2_token &&
expected_token > G_TOKEN_LAST))
print_unexp = FALSE;
if (symbol_name)
g_snprintf (token_string,
token_string_len,
"%s%s `%s'",
print_unexp ? "" : "invalid ",
symbol_spec,
symbol_name);
else
g_snprintf (token_string,
token_string_len,
"%s%s",
print_unexp ? "" : "invalid ",
symbol_spec);
break;
case G_TOKEN_ERROR:
print_unexp = FALSE;
expected_token = G_TOKEN_NONE;
switch (scanner->value.v_error)
{
case G_ERR_UNEXP_EOF:
g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
break;
case G_ERR_UNEXP_EOF_IN_STRING:
g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
break;
case G_ERR_UNEXP_EOF_IN_COMMENT:
g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
break;
case G_ERR_NON_DIGIT_IN_CONST:
g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
break;
case G_ERR_FLOAT_RADIX:
g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
break;
case G_ERR_FLOAT_MALFORMED:
g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
break;
case G_ERR_DIGIT_RADIX:
g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
break;
case G_ERR_UNKNOWN:
default:
g_snprintf (token_string, token_string_len, "scanner: unknown error");
break;
}
break;
case G_TOKEN_CHAR:
g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
break;
case G_TOKEN_IDENTIFIER:
case G_TOKEN_IDENTIFIER_NULL:
if (expected_token == G_TOKEN_IDENTIFIER ||
expected_token == G_TOKEN_IDENTIFIER_NULL)
print_unexp = FALSE;
g_snprintf (token_string,
token_string_len,
"%s%s `%s'",
print_unexp ? "" : "invalid ",
identifier_spec,
scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
break;
case G_TOKEN_BINARY:
case G_TOKEN_OCTAL:
case G_TOKEN_INT:
case G_TOKEN_HEX:
g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
break;
case G_TOKEN_FLOAT:
g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
break;
case G_TOKEN_STRING:
if (expected_token == G_TOKEN_STRING)
print_unexp = FALSE;
g_snprintf (token_string,
token_string_len,
"%s%sstring constant \"%s\"",
print_unexp ? "" : "invalid ",
scanner->value.v_string[0] == 0 ? "empty " : "",
scanner->value.v_string);
token_string[token_string_len - 2] = '"';
token_string[token_string_len - 1] = 0;
break;
case G_TOKEN_COMMENT_SINGLE:
case G_TOKEN_COMMENT_MULTI:
g_snprintf (token_string, token_string_len, "comment");
break;
case G_TOKEN_NONE:
/* somehow the user's parsing code is screwed, there isn't much
* we can do about it.
* Note, a common case to trigger this is
* g_scanner_peek_next_token(); g_scanner_unexp_token();
* without an intermediate g_scanner_get_next_token().
*/
g_assert_not_reached ();
break;
}
switch (expected_token)
{
gboolean need_valid;
default:
if (expected_token >= 1 && expected_token <= 255)
{
if ((expected_token >= ' ' && expected_token <= '~') ||
strchr (scanner->config->cset_identifier_first, expected_token) ||
strchr (scanner->config->cset_identifier_nth, expected_token))
g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
else
g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
break;
}
else if (!scanner->config->symbol_2_token)
{
g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
break;
}
/* fall through */
case G_TOKEN_SYMBOL:
need_valid = (scanner->token == G_TOKEN_SYMBOL ||
(scanner->config->symbol_2_token &&
scanner->token > G_TOKEN_LAST));
g_snprintf (expected_string,
expected_string_len,
"%s%s",
need_valid ? "valid " : "",
symbol_spec);
/* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
break;
case G_TOKEN_INT:
g_snprintf (expected_string, expected_string_len, "%snumber (integer)",
scanner->token == G_TOKEN_INT ? "valid " : "");
break;
case G_TOKEN_FLOAT:
g_snprintf (expected_string, expected_string_len, "%snumber (float)",
scanner->token == G_TOKEN_FLOAT ? "valid " : "");
break;
case G_TOKEN_STRING:
g_snprintf (expected_string,
expected_string_len,
"%sstring constant",
scanner->token == G_TOKEN_STRING ? "valid " : "");
break;
case G_TOKEN_IDENTIFIER:
case G_TOKEN_IDENTIFIER_NULL:
g_snprintf (expected_string,
expected_string_len,
"%s%s",
(scanner->token == G_TOKEN_IDENTIFIER_NULL ||
scanner->token == G_TOKEN_IDENTIFIER ? "valid " : ""),
identifier_spec);
break;
case G_TOKEN_EOF:
g_snprintf (expected_string, expected_string_len, "end of file");
break;
case G_TOKEN_NONE:
break;
}
if (message && message[0] != 0)
message_prefix = " - ";
else
{
message_prefix = "";
message = "";
}
if (expected_token != G_TOKEN_NONE)
{
if (print_unexp)
msg_handler (scanner,
"unexpected %s, expected %s%s%s",
token_string,
expected_string,
message_prefix,
message);
else
msg_handler (scanner,
"%s, expected %s%s%s",
token_string,
expected_string,
message_prefix,
message);
}
else
{
if (print_unexp)
msg_handler (scanner,
"unexpected %s%s%s",
token_string,
message_prefix,
message);
else
msg_handler (scanner,
"%s%s%s",
token_string,
message_prefix,
message);
}
g_free (token_string);
g_free (expected_string);
}
static void
g_scanner_get_token_i (GScanner *scanner,
GTokenType *token_p,
GTokenValue *value_p,
guint *line_p,
guint *position_p)
{
do
{
g_scanner_free_value (token_p, value_p);
g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
}
while (((*token_p > 0 && *token_p < 256) &&
strchr (scanner->config->cset_skip_characters, *token_p)) ||
(*token_p == G_TOKEN_CHAR &&
strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
(*token_p == G_TOKEN_COMMENT_MULTI &&
scanner->config->skip_comment_multi) ||
(*token_p == G_TOKEN_COMMENT_SINGLE &&
scanner->config->skip_comment_single));
switch (*token_p)
{
case G_TOKEN_IDENTIFIER:
if (scanner->config->identifier_2_string)
*token_p = G_TOKEN_STRING;
break;
case G_TOKEN_SYMBOL:
if (scanner->config->symbol_2_token)
*token_p = (GTokenType) value_p->v_symbol;
break;
case G_TOKEN_BINARY:
case G_TOKEN_OCTAL:
case G_TOKEN_HEX:
if (scanner->config->numbers_2_int)
*token_p = G_TOKEN_INT;
break;
default:
break;
}
if (*token_p == G_TOKEN_INT &&
scanner->config->int_2_float)
{
*token_p = G_TOKEN_FLOAT;
value_p->v_float = value_p->v_int;
}
errno = 0;
}
static void
g_scanner_get_token_ll (GScanner *scanner,
GTokenType *token_p,
GTokenValue *value_p,
guint *line_p,
guint *position_p)
{
GScannerConfig *config;
GTokenType token;
gboolean in_comment_multi;
gboolean in_comment_single;
gboolean in_string_sq;
gboolean in_string_dq;
GString *gstring;
GTokenValue value;
guchar ch;
config = scanner->config;
(*value_p).v_int = 0;
if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
scanner->token == G_TOKEN_EOF)
{
*token_p = G_TOKEN_EOF;
return;
}
in_comment_multi = FALSE;
in_comment_single = FALSE;
in_string_sq = FALSE;
in_string_dq = FALSE;
gstring = NULL;
do /* while (ch != 0) */
{
gboolean dotted_float = FALSE;
ch = g_scanner_get_char (scanner, line_p, position_p);
value.v_int = 0;
token = G_TOKEN_NONE;
/* this is *evil*, but needed ;(
* we first check for identifier first character, because it
* might interfere with other key chars like slashes or numbers
*/
if (config->scan_identifier &&
ch && strchr (config->cset_identifier_first, ch))
goto identifier_precedence;
switch (ch)
{
case 0:
token = G_TOKEN_EOF;
(*position_p)++;
/* ch = 0; */
break;
case '/':
if (!config->scan_comment_multi ||
g_scanner_peek_next_char (scanner) != '*')
goto default_case;
g_scanner_get_char (scanner, line_p, position_p);
token = G_TOKEN_COMMENT_MULTI;
in_comment_multi = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
{
g_scanner_get_char (scanner, line_p, position_p);
in_comment_multi = FALSE;
break;
}
else
g_string_append_c (gstring, ch);
}
ch = 0;
break;
case '\'':
if (!config->scan_string_sq)
goto default_case;
token = G_TOKEN_STRING;
in_string_sq = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '\'')
{
in_string_sq = FALSE;
break;
}
else
gstring = g_string_append_c (gstring, ch);
}
ch = 0;
break;
case '"':
if (!config->scan_string_dq)
goto default_case;
token = G_TOKEN_STRING;
in_string_dq = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '"')
{
in_string_dq = FALSE;
break;
}
else
{
if (ch == '\\')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
switch (ch)
{
guint i;
guint fchar;
case 0:
break;
case '\\':
gstring = g_string_append_c (gstring, '\\');
break;
case 'n':
gstring = g_string_append_c (gstring, '\n');
break;
case 't':
gstring = g_string_append_c (gstring, '\t');
break;
case 'r':
gstring = g_string_append_c (gstring, '\r');
break;
case 'b':
gstring = g_string_append_c (gstring, '\b');
break;
case 'f':
gstring = g_string_append_c (gstring, '\f');
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
i = ch - '0';
fchar = g_scanner_peek_next_char (scanner);
if (fchar >= '0' && fchar <= '7')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
i = i * 8 + ch - '0';
fchar = g_scanner_peek_next_char (scanner);
if (fchar >= '0' && fchar <= '7')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
i = i * 8 + ch - '0';
}
}
gstring = g_string_append_c (gstring, i);
break;
default:
gstring = g_string_append_c (gstring, ch);
break;
}
}
else
gstring = g_string_append_c (gstring, ch);
}
}
ch = 0;
break;
case '.':
if (!config->scan_float)
goto default_case;
token = G_TOKEN_FLOAT;
dotted_float = TRUE;
ch = g_scanner_get_char (scanner, line_p, position_p);
goto number_parsing;
case '$':
if (!config->scan_hex_dollar)
goto default_case;
token = G_TOKEN_HEX;
ch = g_scanner_get_char (scanner, line_p, position_p);
goto number_parsing;
case '0':
if (config->scan_octal)
token = G_TOKEN_OCTAL;
else
token = G_TOKEN_INT;
ch = g_scanner_peek_next_char (scanner);
if (config->scan_hex && (ch == 'x' || ch == 'X'))
{
token = G_TOKEN_HEX;
g_scanner_get_char (scanner, line_p, position_p);
ch = g_scanner_get_char (scanner, line_p, position_p);
if (ch == 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_UNEXP_EOF;
(*position_p)++;
break;
}
if (g_scanner_char_2_num (ch, 16) < 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_DIGIT_RADIX;
ch = 0;
break;
}
}
else if (config->scan_binary && (ch == 'b' || ch == 'B'))
{
token = G_TOKEN_BINARY;
g_scanner_get_char (scanner, line_p, position_p);
ch = g_scanner_get_char (scanner, line_p, position_p);
if (ch == 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_UNEXP_EOF;
(*position_p)++;
break;
}
if (g_scanner_char_2_num (ch, 10) < 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
ch = 0;
break;
}
}
else
ch = '0';
/* fall through */
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
number_parsing:
{
gboolean in_number = TRUE;
gchar *endptr;
if (token == G_TOKEN_NONE)
token = G_TOKEN_INT;
gstring = g_string_new (dotted_float ? "0." : "");
gstring = g_string_append_c (gstring, ch);
do /* while (in_number) */
{
gboolean is_E;
is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
ch = g_scanner_peek_next_char (scanner);
if (g_scanner_char_2_num (ch, 36) >= 0 ||
(config->scan_float && ch == '.') ||
(is_E && (ch == '+' || ch == '-')))
{
ch = g_scanner_get_char (scanner, line_p, position_p);
switch (ch)
{
case '.':
if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
{
value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
token = G_TOKEN_ERROR;
in_number = FALSE;
}
else
{
token = G_TOKEN_FLOAT;
gstring = g_string_append_c (gstring, ch);
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
gstring = g_string_append_c (gstring, ch);
break;
case '-':
case '+':
if (token != G_TOKEN_FLOAT)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
gstring = g_string_append_c (gstring, ch);
break;
case 'e':
case 'E':
if ((token != G_TOKEN_HEX && !config->scan_float) ||
(token != G_TOKEN_HEX &&
token != G_TOKEN_OCTAL &&
token != G_TOKEN_FLOAT &&
token != G_TOKEN_INT))
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
{
if (token != G_TOKEN_HEX)
token = G_TOKEN_FLOAT;
gstring = g_string_append_c (gstring, ch);
}
break;
default:
if (token != G_TOKEN_HEX)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
gstring = g_string_append_c (gstring, ch);
break;
}
}
else
in_number = FALSE;
}
while (in_number);
endptr = NULL;
switch (token)
{
case G_TOKEN_BINARY:
value.v_binary = strtol (gstring->str, &endptr, 2);
break;
case G_TOKEN_OCTAL:
value.v_octal = strtol (gstring->str, &endptr, 8);
break;
case G_TOKEN_INT:
value.v_int = strtol (gstring->str, &endptr, 10);
break;
case G_TOKEN_FLOAT:
value.v_float = g_strtod (gstring->str, &endptr);
break;
case G_TOKEN_HEX:
value.v_hex = strtol (gstring->str, &endptr, 16);
break;
default:
break;
}
if (endptr && *endptr)
{
token = G_TOKEN_ERROR;
if (*endptr == 'e' || *endptr == 'E')
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
else
value.v_error = G_ERR_DIGIT_RADIX;
}
g_string_free (gstring, TRUE);
gstring = NULL;
ch = 0;
} /* number_parsing:... */
break;
default:
default_case:
{
if (config->cpair_comment_single &&
ch == config->cpair_comment_single[0])
{
token = G_TOKEN_COMMENT_SINGLE;
in_comment_single = TRUE;
gstring = g_string_new ("");
ch = g_scanner_get_char (scanner, line_p, position_p);
while (ch != 0)
{
if (ch == config->cpair_comment_single[1])
{
in_comment_single = FALSE;
ch = 0;
break;
}
gstring = g_string_append_c (gstring, ch);
ch = g_scanner_get_char (scanner, line_p, position_p);
}
}
else if (config->scan_identifier && ch &&
strchr (config->cset_identifier_first, ch))
{
identifier_precedence:
if (config->cset_identifier_nth && ch &&
strchr (config->cset_identifier_nth,
g_scanner_peek_next_char (scanner)))
{
token = G_TOKEN_IDENTIFIER;
gstring = g_string_new ("");
gstring = g_string_append_c (gstring, ch);
do
{
ch = g_scanner_get_char (scanner, line_p, position_p);
gstring = g_string_append_c (gstring, ch);
ch = g_scanner_peek_next_char (scanner);
}
while (ch && strchr (config->cset_identifier_nth, ch));
ch = 0;
}
else if (config->scan_identifier_1char)
{
token = G_TOKEN_IDENTIFIER;
value.v_identifier = g_new0 (gchar, 2);
value.v_identifier[0] = ch;
ch = 0;
}
}
if (ch)
{
if (config->char_2_token)
token = ch;
else
{
token = G_TOKEN_CHAR;
value.v_char = ch;
}
ch = 0;
}
} /* default_case:... */
break;
}
g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
}
while (ch != 0);
if (in_comment_multi || in_comment_single ||
in_string_sq || in_string_dq)
{
token = G_TOKEN_ERROR;
if (gstring)
{
g_string_free (gstring, TRUE);
gstring = NULL;
}
(*position_p)++;
if (in_comment_multi || in_comment_single)
value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
else /* (in_string_sq || in_string_dq) */
value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
}
if (gstring)
{
value.v_string = gstring->str;
g_string_free (gstring, FALSE);
gstring = NULL;
}
if (token == G_TOKEN_IDENTIFIER)
{
if (config->scan_symbols)
{
GScannerKey *key;
guint scope_id;
scope_id = scanner->scope_id;
key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
if (!key && scope_id && scanner->config->scope_0_fallback)
key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
if (key)
{
g_free (value.v_identifier);
token = G_TOKEN_SYMBOL;
value.v_symbol = key->value;
}
}
if (token == G_TOKEN_IDENTIFIER &&
config->scan_identifier_NULL &&
strlen (value.v_identifier) == 4)
{
const gchar *null_upper = "NULL";
const gchar *null_lower = "null";
if (scanner->config->case_sensitive)
{
if (value.v_identifier[0] == null_upper[0] &&
value.v_identifier[1] == null_upper[1] &&
value.v_identifier[2] == null_upper[2] &&
value.v_identifier[3] == null_upper[3])
token = G_TOKEN_IDENTIFIER_NULL;
}
else
{
if ((value.v_identifier[0] == null_upper[0] ||
value.v_identifier[0] == null_lower[0]) &&
(value.v_identifier[1] == null_upper[1] ||
value.v_identifier[1] == null_lower[1]) &&
(value.v_identifier[2] == null_upper[2] ||
value.v_identifier[2] == null_lower[2]) &&
(value.v_identifier[3] == null_upper[3] ||
value.v_identifier[3] == null_lower[3]))
token = G_TOKEN_IDENTIFIER_NULL;
}
}
}
*token_p = token;
*value_p = value;
}
gdouble
g_strtod (const gchar *nptr,
gchar **endptr)
{
gchar *fail_pos_1;
gchar *fail_pos_2;
gdouble val_1;
gdouble val_2 = 0;
g_return_val_if_fail (nptr != NULL, 0);
fail_pos_1 = NULL;
fail_pos_2 = NULL;
val_1 = strtod (nptr, &fail_pos_1);
if (fail_pos_1 && fail_pos_1[0] != 0)
{
gchar *old_locale;
old_locale = g_strdup (setlocale (LC_NUMERIC, NULL));
setlocale (LC_NUMERIC, "C");
val_2 = strtod (nptr, &fail_pos_2);
setlocale (LC_NUMERIC, old_locale);
g_free (old_locale);
}
if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
{
if (endptr)
*endptr = fail_pos_1;
return val_1;
}
else
{
if (endptr)
*endptr = fail_pos_2;
return val_2;
}
}
#ifndef MB_LEN_MAX
# define MB_LEN_MAX 8
#endif
typedef struct
{
guint min_width;
guint precision;
gboolean alternate_format, zero_padding, adjust_left, locale_grouping;
gboolean add_space, add_sign, possible_sign, seen_precision;
gboolean mod_half, mod_long, mod_extra_long;
} PrintfArgSpec;
static gsize
printf_string_upper_bound (const gchar *format,
gboolean may_warn,
va_list args)
{
static gboolean honour_longs = sizeof(long) > 4 || sizeof(void*) > 4;
gsize len = 1;
if (!format)
return len;
while (*format)
{
register gchar c = *format++;
if (c != '%')
len += 1;
else /* (c == '%') */
{
PrintfArgSpec spec = { 0, };
gboolean seen_l = FALSE, conv_done = FALSE;
gsize conv_len = 0;
const gchar *spec_start = format;
do
{
c = *format++;
switch (c)
{
GDoubleIEEE754 u_double;
guint v_uint;
gint v_int;
const gchar *v_string;
/* beware of positional parameters
*/
case '$':
if (may_warn)
g_warning (G_STRLOC ": unable to handle positional parameters (%%n$)");
len += 1024; /* try adding some safety padding */
break;
/* parse flags
*/
case '#':
spec.alternate_format = TRUE;
break;
case '0':
spec.zero_padding = TRUE;
break;
case '-':
spec.adjust_left = TRUE;
break;
case ' ':
spec.add_space = TRUE;
break;
case '+':
spec.add_sign = TRUE;
break;
case '\'':
spec.locale_grouping = TRUE;
break;
/* parse output size specifications
*/
case '.':
spec.seen_precision = TRUE;
break;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
v_uint = c - '0';
c = *format;
while (c >= '0' && c <= '9')
{
format++;
v_uint = v_uint * 10 + c - '0';
c = *format;
}
if (spec.seen_precision)
spec.precision = MAX (spec.precision, v_uint);
else
spec.min_width = MAX (spec.min_width, v_uint);
break;
case '*':
v_int = va_arg (args, int);
if (spec.seen_precision)
{
/* forget about negative precision */
if (v_int >= 0)
spec.precision = MAX (spec.precision, v_int);
}
else
{
if (v_int < 0)
{
v_int = - v_int;
spec.adjust_left = TRUE;
}
spec.min_width = MAX (spec.min_width, v_int);
}
break;
/* parse type modifiers
*/
case 'h':
spec.mod_half = TRUE;
break;
case 'l':
if (!seen_l)
{
spec.mod_long = TRUE;
seen_l = TRUE;
break;
}
/* else, fall through */
case 'L':
case 'q':
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
break;
case 'z':
case 'Z':
if (sizeof(size_t))
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
case 't':
if (sizeof(ptrdiff_t) > 4)
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
case 'j':
if (GLIB_SIZEOF_INTMAX > 4)
{
spec.mod_long = TRUE;
spec.mod_extra_long = TRUE;
}
break;
/* parse output conversions
*/
case '%':
conv_len += 1;
break;
case 'O':
case 'D':
case 'I':
case 'U':
/* some C libraries feature long variants for these as well? */
spec.mod_long = TRUE;
/* fall through */
case 'o':
conv_len += 2;
/* fall through */
case 'd':
case 'i':
conv_len += 1; /* sign */
/* fall through */
case 'u':
conv_len += 4;
/* fall through */
case 'x':
case 'X':
spec.possible_sign = TRUE;
conv_len += 10;
if (spec.mod_long && honour_longs)
conv_len *= 2;
if (spec.mod_extra_long)
conv_len *= 2;
if (spec.mod_extra_long)
{
(void) va_arg (args, gint64);
}
else if (spec.mod_long)
(void) va_arg (args, long);
else
(void) va_arg (args, int);
break;
case 'A':
case 'a':
/* 0x */
conv_len += 2;
/* fall through */
case 'g':
case 'G':
case 'e':
case 'E':
case 'f':
spec.possible_sign = TRUE;
/* n . dddddddddddddddddddddddd E +- eeee */
conv_len += 1 + 1 + MAX (24, spec.precision) + 1 + 1 + 4;
if (may_warn && spec.mod_extra_long)
g_warning (G_STRLOC ": unable to handle long double, collecting double only");
#ifdef HAVE_LONG_DOUBLE
#error need to implement special handling for long double
#endif
u_double.v_double = va_arg (args, double);
/* %f can expand up to all significant digits before '.' (308) */
if (c == 'f' &&
u_double.mpn.biased_exponent > 0 && u_double.mpn.biased_exponent < 2047)
{
gint exp = u_double.mpn.biased_exponent;
exp -= G_IEEE754_DOUBLE_BIAS;
exp = exp * G_LOG_2_BASE_10 + 1;
conv_len += ABS (exp); /* exp can be <0 */
}
/* some printf() implementations require extra padding for rounding */
conv_len += 2;
/* we can't really handle locale specific grouping here */
if (spec.locale_grouping)
conv_len *= 2;
break;
case 'C':
spec.mod_long = TRUE;
/* fall through */
case 'c':
conv_len += spec.mod_long ? MB_LEN_MAX : 1;
(void) va_arg (args, int);
break;
case 'S':
spec.mod_long = TRUE;
/* fall through */
case 's':
v_string = va_arg (args, char*);
if (!v_string)
conv_len += 8; /* hold "(null)" */
else if (spec.seen_precision)
conv_len += spec.precision;
else
conv_len += strlen (v_string);
conv_done = TRUE;
if (spec.mod_long)
{
if (may_warn)
g_warning (G_STRLOC": unable to handle wide char strings");
len += 1024; /* try adding some safety padding */
}
break;
case 'P': /* do we actually need this? */
/* fall through */
case 'p':
spec.alternate_format = TRUE;
conv_len += 10;
if (honour_longs)
conv_len *= 2;
/* fall through */
case 'n':
conv_done = TRUE;
(void) va_arg (args, void*);
break;
case 'm':
/* there's not much we can do to be clever */
v_string = g_strerror (errno);
v_uint = v_string ? strlen (v_string) : 0;
conv_len += MAX (256, v_uint);
break;
/* handle invalid cases
*/
case '\000':
/* no conversion specification, bad bad */
conv_len += format - spec_start;
break;
default:
if (may_warn)
g_warning (G_STRLOC": unable to handle `%c' while parsing format",
c);
break;
}
conv_done |= conv_len > 0;
}
while (!conv_done);
/* handle width specifications */
conv_len = MAX (conv_len, MAX (spec.precision, spec.min_width));
/* handle flags */
conv_len += spec.alternate_format ? 2 : 0;
conv_len += (spec.add_space || spec.add_sign || spec.possible_sign);
/* finally done */
len += conv_len;
} /* else (c == '%') */
} /* while (*format) */
return len;
}
gsize
g_printf_string_upper_bound (const gchar *format,
va_list args)
{
return printf_string_upper_bound (format, TRUE, args);
}
gchar*
g_get_current_dir (void)
{
gchar *buffer = NULL;
gchar *dir = NULL;
static gulong max_len = 0;
if (max_len == 0)
max_len = (G_PATH_LENGTH == -1) ? 2048 : G_PATH_LENGTH;
/* We don't use getcwd(3) on SUNOS, because, it does a popen("pwd")
* and, if that wasn't bad enough, hangs in doing so.
*/
#if (defined (sun) && !defined (__SVR4)) || !defined(HAVE_GETCWD)
buffer = g_new (gchar, max_len + 1);
*buffer = 0;
dir = getwd (buffer);
#else /* !sun || !HAVE_GETCWD */
while (max_len < G_MAXULONG / 2)
{
buffer = g_new (gchar, max_len + 1);
*buffer = 0;
dir = getcwd (buffer, max_len);
if (dir || errno != ERANGE)
break;
g_free (buffer);
max_len *= 2;
}
#endif /* !sun || !HAVE_GETCWD */
if (!dir || !*buffer)
{
/* hm, should we g_error() out here?
* this can happen if e.g. "./" has mode \0000
*/
buffer[0] = G_DIR_SEPARATOR;
buffer[1] = 0;
}
dir = g_strdup (buffer);
g_free (buffer);
return dir;
}
gboolean
g_path_is_absolute (const gchar *file_name)
{
g_return_val_if_fail (file_name != NULL, FALSE);
if (file_name[0] == G_DIR_SEPARATOR
#ifdef G_OS_WIN32
|| file_name[0] == '/'
#endif
)
return TRUE;
#ifdef G_OS_WIN32
/* Recognize drive letter on native Windows */
if (g_ascii_isalpha (file_name[0]) && file_name[1] == ':' && (file_name[2] == G_DIR_SEPARATOR || file_name[2] == '/'))
return TRUE;
#endif /* G_OS_WIN32 */
return FALSE;
}
/* vim:set ts=8 sw=2 sts=2: */
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