--- /dev/null
+/*
+ * This file is part of flex.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/*
+ * This test present ability to handle various encodings of incoming data
+ * by that same compiled parser. Test verifies ability to properly handle
+ * files in three encodings.
+ *
+ * This scanner file is written in ISO-8859-1 (LATIN-1), and this is also the
+ * first readable charset for generated scanner. Second and third, EBCDIC-500
+ * and CP850 are processed in charset_handler function provided in this .l file.
+ *
+ * This file generates both reentrant and no-reentrant scanners by being
+ * preprocessed by m4 with or without VARIANT_REENTRANT value defined.
+ */
+
+%{
+#include <stdio.h>
+#include <stdlib.h>
+#include "config.h"
+
+m4_ifdef(`VARIANT_REENTRANT', `#define VARIANT_REENTRANT 1', `')
+
+%}
+
+%option 8bit prefix="test" charset-source="ISO-8859-1"
+%option nounput nomain noinput noyywrap charset
+%option warn
+
+m4_ifdef(`VARIANT_REENTRANT', `%option reentrant', `')
+
+
+%%
+
+[A-ZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ] { fprintf(yyout, "U"); }
+[a-zàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿß] { fprintf(yyout, "L"); }
+[0-9] { fprintf(yyout, "N"); }
+
+%%
+
+/*
+ * The function provided by scanner to handle encodings. It gets set of incoming
+ * bytes and convert into set of characters in internal representation - in the
+ * case of 7/8bit parsers, internal representation is always the same as
+ * "charset-source"
+ *
+ * charset - charset name (in ASCII)
+ * source - incoming bytes
+ * source_bytes - count of incoming bytes
+ * target - where to place output characters
+ * target_length - maximum number of characters (in YY_CHARs) that can be placed
+ * in "target" buffer
+ * converted_bytes - pointer to variable that should be set to number of bytes
+ * that has been properly converted from "source" buffer
+ *
+ * RETURNS: number of characters that has been written into "target" buffer.
+ * Must not be greater than value of "target_length" parameter.
+ */
+size_t charset_handler(char *charset, char* source, size_t source_bytes,
+ YY_CHAR* target, size_t target_length, size_t* converted_bytes
+#if VARIANT_REENTRANT
+ , yyscan_t yyscanner
+#endif
+ ) {
+ /* conversion from CP850 to ISO-8859-1. Unrepresentable values are set to -1 */
+ static int conversion_table_cp850[256] = {
+0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
+0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
+0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
+0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
+0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
+0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
+
+0xC7, 0xFC, 0xE9, 0xE2, 0xE4, 0xE0, 0xE5, 0xE7, 0xEA, 0xEB, 0xE8, 0xEF, 0xEE, 0xEC, 0xC4, 0xC5,
+0xC9, 0xE6, 0xC6, 0xF4, 0xF6, 0xF2, 0xFB, 0xF9, 0xFF, 0xD6, 0xDC, 0xF8, 0xA3, 0xD8, 0xD7, -1,
+0xE1, 0xED, 0xF3, 0xFA, 0xF1, 0xD1, 0xAA, 0xBA, 0xBF, 0xAE, 0xAC, 0xBD, 0xBC, 0xA1, 0xAB, 0xBB,
+ -1, -1, -1, -1, -1, 0xC1, 0xC2, 0xC0, 0xA9, -1, -1, -1, -1, 0xA2, 0xA5, -1,
+ -1, -1, -1, -1, -1, -1, 0xE3, 0xC3, -1, -1, -1, -1, -1, -1, -1, 0xA4,
+0xF0, 0xD0, 0xCA, 0xCB, 0xC8, -1, 0xCD, 0xCE, 0xCF, -1, -1, -1, -1, 0xA6, 0xCC, -1,
+0xD3, 0xDF, 0xD4, 0xD2, 0xF5, 0xD5, 0xB5, 0xFE, 0xDE, 0xDA, 0xDB, 0xD9, 0xFD, 0xDD, 0xAF, 0xB4,
+0xAD, 0xB1, -1, 0xBE, 0xB6, 0xA7, 0xF7, 0xB8, 0xB0, 0xA8, 0xB7, 0xB9, 0xB3, 0xB2, -1, 0xA0
+ };
+
+ /* conversion from EBCDIC-500 to ISO-8859-1. Unrepresentable values are set to -1 */
+ static int conversion_table_ebcdic500[256] = {
+0x00, 0x01, 0x02, 0x03, -1, 0x09, -1, 0x7F, -1, -1, -1, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+0x10, 0x11, 0x12, 0x13, -1, 0x85, 0x08, -1, 0x18, 0x19, -1, -1, 0x1C, 0x1D, 0x1E, 0x1F,
+ -1, -1, -1, -1, -1, 0x0A, 0x17, 0x1B, -1, -1, -1, -1, -1, 0x05, 0x06, 0x07,
+ -1, -1, 0x16, -1, -1, -1, -1, 0x04, -1, -1, -1, -1, 0x14, 0x15, -1, 0x1A,
+0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5, 0xE7, 0xF1, 0x5B, 0x2E, 0x3C, 0x28, 0x2B, 0x21,
+0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF, 0xEC, 0xDF, 0x5D, 0x24, 0x2A, 0x29, 0x3B, 0x5E,
+0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5, 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
+0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF, 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
+
+0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1,
+0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0xA4,
+0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0xDD, 0xDE, 0xAE,
+0xA2, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC, 0xBD, 0xBE, 0xAC, 0x7C, 0xAF, 0xA8, 0xB4, 0xD7,
+0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5,
+0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xFF,
+0x5C, 0xF7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5,
+0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, -1
+ };
+
+ static int *cnv = NULL;
+ if(strcmp(charset, "CP850") == 0)
+ cnv = conversion_table_cp850;
+ else if(strcmp(charset, "EBCDIC-500") == 0)
+ cnv = conversion_table_ebcdic500;
+ else
+ YY_FATAL_ERROR("Unknown encoding");
+
+ if(target_length < source_bytes)
+ YY_FATAL_ERROR("Too small buffer");
+ int i;
+ for(i = 0; i < source_bytes; ++i) {
+ char in = source[i];
+ int ch = cnv[(unsigned char)in];
+ if(ch == -1) {
+ char msg[256];
+ snprintf(msg, sizeof(msg), "Unsupported byte 0x%x",
+ (unsigned int)(unsigned char)in);
+ YY_FATAL_ERROR(msg);
+ }
+ target[i] = ch;
+ }
+ *converted_bytes = source_bytes;
+ return source_bytes;
+}
+
+int main (int argc, char *argv[])
+{
+ if(argc < 2) {
+ fprintf(stderr, "USAGE: %s [CHARSET]", argv[0]);
+ return 1;
+ }
+ char *charset = argv[1];
+
+#if VARIANT_REENTRANT
+ yyscan_t lexer;
+
+ yylex_init(&lexer);
+
+ yyset_in(stdin, lexer);
+ yyset_out(stdout, lexer);
+ yyset_charset(charset, lexer);
+ yyset_charset_handler(charset_handler, lexer);
+
+ yylex( lexer );
+
+ yylex_destroy( lexer);
+#else
+ yyin = stdin;
+ yyout = stdout;
+ yycharset = charset;
+ yycharset_handler = charset_handler;
+
+ yylex();
+#endif
+ return 0;
+}
projects / flex / commitdiff