/* Copyright (c) 2004, 2022, Oracle and/or its affiliates.

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License, version 2.0,
 as published by the Free Software Foundation.

 This program is also distributed with certain software (including
 but not limited to OpenSSL) that is licensed under separate terms,
 as designated in a particular file or component or in included license
 documentation. The authors of MySQL hereby grant you an additional
 permission to link the program and your derivative works with the
 separately licensed software that they have included with MySQL.

 This program 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 General Public License, version 2.0, for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */

/*
 Converts a SQL file into a C file that can be compiled and linked
 into other programs
*/

#include "my_config.h"

#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#include "my_compiler.h"
#include "mysql/psi/mysql_file.h"
#include "sql/sql_bootstrap.h"
#include "welcome_copyright_notice.h"
/*
 This is an internal tool used during the build process only,
 - do not make a library just for this,
 which would make the Makefiles and the server link
 more complex than necessary,
 - do not duplicate the code either.
 so just add the sql_bootstrap.cc code as is.
*/
#include "sql/sql_bootstrap.cc"

FILE *in;
FILE *out;

[[noreturn]] static void die(const char *fmt, ...)
 MY_ATTRIBUTE((format(printf, 1, 2)));

static void die(const char *fmt, ...) {
 va_list args;

 /* Print the error message */
 fprintf(stderr, "FATAL ERROR: ");
 if (fmt) {
 va_start(args, fmt);
 vfprintf(stderr, fmt, args);
 va_end(args);
 } else
 fprintf(stderr, "unknown error");
 fprintf(stderr, "\n");
 fflush(stderr);

 /* Close any open files */
 if (in) fclose(in);
 if (out) fclose(out);

 exit(1);
}

static void parser_die(const char *message) { die("%s", message); }

static char *fgets_fn(char *buffer, size_t size, MYSQL_FILE *input,
 int *error) {
 FILE *real_in = input->m_file;
 char *line = fgets(buffer, (int)size, real_in);
 if (error) {
 *error = (line == nullptr) ? ferror(real_in) : 0;
 }
 return line;
}

static void print_query(FILE *out, const char *query) {
 const char *ptr = query;
 int column = 0;

 fprintf(out, "\"");
 while (*ptr) {
 /* utf-8 encoded characters are always >= 0x80 unsigned */
 if (column >= 120 && static_cast<uint8_t>(*ptr) < 0x80) {
 /* Wrap to the next line, tabulated. */
 fprintf(out, "\"\n\"");
 column = 3;
 }
 switch (*ptr) {
 case '\n':
 /*
 Preserve the \n character in the query text,
 and wrap to the next line, tabulated.
 */
 fprintf(out, "\\n\"\n\"");
 column = 3;
 break;
 case '\r':
 /* Skipped */
 break;
 case '\"':
 fprintf(out, "\\\"");
 column += 2;
 break;
 case '\\':
 fprintf(out, "\\\\");
 column++;
 break;
 default:
 putc(*ptr, out);
 column++;
 break;
 }
 ptr++;
 }
 fprintf(out, "\\n\",\n");
}

int main(int argc, char *argv[]) {
 char query[MAX_BOOTSTRAP_QUERY_SIZE];
 char *struct_name = argv[1];
 char *infile_name = argv[2];
 char *outfile_name = argv[3];
 int rc;
 size_t query_length = 0;
 bootstrap_parser_state parser_state;

 if (argc != 4)
 die("Usage: comp_sql <struct_name> <sql_filename> <c_filename>");

 /* Open input and output file */
 if (!(in = fopen(infile_name, "r")))
 die("Failed to open SQL file '%s'", infile_name);
 if (!(out = fopen(outfile_name, "w")))
 die("Failed to open output file '%s'", outfile_name);

 fprintf(out, ORACLE_GPL_COPYRIGHT_NOTICE("2004"));
 fprintf(out, "/*\n");
 fprintf(out,
 " Do not edit this file, it is automatically generated from:\n");
 fprintf(out, " <%s>\n", infile_name);
 fprintf(out, "*/\n");
 fprintf(out, "const char* %s[]={\n", struct_name);

 parser_state.init(infile_name);

 /* Craft an non instrumented MYSQL_FILE. */
 MYSQL_FILE fake_in;
 fake_in.m_file = in;
 fake_in.m_psi = nullptr;

 for (;;) {
 rc = read_bootstrap_query(query, &query_length, &fake_in, fgets_fn,
 &parser_state);

 if (rc == READ_BOOTSTRAP_EOF) {
 break;
 }

 if (rc != READ_BOOTSTRAP_SUCCESS) {
 parser_state.report_error_details(parser_die);
 }

 print_query(out, query);
 }

 fprintf(out, "NULL\n};\n");

 fclose(in);
 fclose(out);

 exit(0);
}