diff options
Diffstat (limited to 'protocols/Sametime/src/glib/gscanner.c')
| -rw-r--r-- | protocols/Sametime/src/glib/gscanner.c | 1767 |
1 files changed, 1767 insertions, 0 deletions
diff --git a/protocols/Sametime/src/glib/gscanner.c b/protocols/Sametime/src/glib/gscanner.c new file mode 100644 index 0000000000..1234a60b26 --- /dev/null +++ b/protocols/Sametime/src/glib/gscanner.c @@ -0,0 +1,1767 @@ +/* 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, 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 "config.h" + +#include <errno.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <stdio.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#ifdef G_OS_WIN32 +#include <io.h> /* For _read() */ +#endif + +#include "gscanner.h" + +#include "gprintfint.h" +#include "gstrfuncs.h" +#include "gstring.h" +#include "gtestutils.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 --- */ +static const 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 */, + FALSE /* store_int64 */, +}; + + +/* --- 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, + gboolean 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 = 1; + 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->config->store_int64 = config_templ->store_int64; + + scanner->token = G_TOKEN_NONE; + scanner->value.v_int64 = 0; + scanner->line = 1; + scanner->position = 0; + + scanner->next_token = G_TOKEN_NONE; + scanner->next_value.v_int64 = 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, + gboolean is_error) +{ + g_return_if_fail (scanner != NULL); + + _g_fprintf (stderr, "%s:%d: ", + scanner->input_name ? scanner->input_name : "<memory>", + scanner->line); + if (is_error) + _g_fprintf (stderr, "error: "); + _g_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_int64 = 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 || scanner->token == G_TOKEN_ERROR; +} + +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_int64 = 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_int64 = 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 file descriptor, 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; + 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, token_string_len, "character `%c'", scanner->token); + else + _g_snprintf (token_string, token_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: + if (scanner->config->store_int64) + _g_snprintf (token_string, token_string_len, "number `%" G_GUINT64_FORMAT "'", scanner->value.v_int64); + else + _g_snprintf (token_string, token_string_len, "number `%lu'", 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; + gchar *tstring; + case G_TOKEN_EOF: + _g_snprintf (expected_string, expected_string_len, "end of file"); + break; + 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_CHAR: + _g_snprintf (expected_string, expected_string_len, "%scharacter", + scanner->token == G_TOKEN_CHAR ? "valid " : ""); + break; + case G_TOKEN_BINARY: + tstring = "binary"; + _g_snprintf (expected_string, expected_string_len, "%snumber (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_OCTAL: + tstring = "octal"; + _g_snprintf (expected_string, expected_string_len, "%snumber (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_INT: + tstring = "integer"; + _g_snprintf (expected_string, expected_string_len, "%snumber (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_HEX: + tstring = "hexadecimal"; + _g_snprintf (expected_string, expected_string_len, "%snumber (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_FLOAT: + tstring = "float"; + _g_snprintf (expected_string, expected_string_len, "%snumber (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + 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: + need_valid = (scanner->token == G_TOKEN_IDENTIFIER_NULL || + scanner->token == G_TOKEN_IDENTIFIER); + _g_snprintf (expected_string, + expected_string_len, + "%s%s", + need_valid ? "valid " : "", + identifier_spec); + break; + case G_TOKEN_COMMENT_SINGLE: + tstring = "single-line"; + _g_snprintf (expected_string, expected_string_len, "%scomment (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_COMMENT_MULTI: + tstring = "multi-line"; + _g_snprintf (expected_string, expected_string_len, "%scomment (%s)", + scanner->token == expected_token ? "valid " : "", tstring); + break; + case G_TOKEN_NONE: + case G_TOKEN_ERROR: + /* this is handled upon printout */ + break; + } + + if (message && message[0] != 0) + message_prefix = " - "; + else + { + message_prefix = ""; + message = ""; + } + if (expected_token == G_TOKEN_ERROR) + { + msg_handler (scanner, + "failure around %s%s%s", + token_string, + message_prefix, + message); + } + else if (expected_token == G_TOKEN_NONE) + { + 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); + } + else + { + 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); + } + + 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; + if (scanner->config->store_int64) + { +#ifdef _MSC_VER + /* work around error C2520, see gvaluetransform.c */ + value_p->v_float = (__int64)value_p->v_int64; +#else + value_p->v_float = value_p->v_int64; +#endif + } + else + 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_int64 = 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_int64 = 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 (NULL); + 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 + gstring = 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 (NULL); + 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 (NULL); + 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; + if (token == G_TOKEN_FLOAT) + value.v_float = g_strtod (gstring->str, &endptr); + else + { + guint64 ui64 = 0; + switch (token) + { + case G_TOKEN_BINARY: + ui64 = g_ascii_strtoull (gstring->str, &endptr, 2); + break; + case G_TOKEN_OCTAL: + ui64 = g_ascii_strtoull (gstring->str, &endptr, 8); + break; + case G_TOKEN_INT: + ui64 = g_ascii_strtoull (gstring->str, &endptr, 10); + break; + case G_TOKEN_HEX: + ui64 = g_ascii_strtoull (gstring->str, &endptr, 16); + break; + default: ; + } + if (scanner->config->store_int64) + value.v_int64 = ui64; + else + value.v_int = ui64; + } + 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 (NULL); + 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); + } + /* ignore a missing newline at EOF for single line comments */ + if (in_comment_single && + config->cpair_comment_single[1] == '\n') + in_comment_single = FALSE; + } + 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 (NULL); + 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 = 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) + { + gchar *null_upper = "NULL"; + 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; +} |