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px4-firmware/nuttx/tools/mksymtab.c

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/****************************************************************************
* tools/mksymtab.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "csvparser.h"
/****************************************************************************
* Definitions
****************************************************************************/
#define MAX_HEADER_FILES 500
#define SYMTAB_NAME "g_symtab"
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static const char *g_hdrfiles[MAX_HEADER_FILES];
static int nhdrfiles;
/****************************************************************************
* Private Functions
****************************************************************************/
static void show_usage(const char *progname)
{
fprintf(stderr, "USAGE: %s <cvs-file> <symtab-file>\n\n", progname);
fprintf(stderr, "Where:\n\n");
fprintf(stderr, " <cvs-file> : The path to the input CSV file\n");
fprintf(stderr, " <symtab-file>: The path to the output symbol table file\n");
fprintf(stderr, " -d : Enable debug output\n");
exit(EXIT_FAILURE);
}
static bool check_hdrfile(const char *hdrfile)
{
int i;
for (i = 0; i < nhdrfiles; i++)
{
if (strcmp(g_hdrfiles[i], hdrfile) == 0)
{
return true;
}
}
return false;
}
static void add_hdrfile(const char *hdrfile)
{
if (hdrfile && strlen(hdrfile) > 0)
{
if (!check_hdrfile(hdrfile))
{
if (nhdrfiles > MAX_HEADER_FILES)
{
fprintf(stderr, "ERROR: Too man header files. Increase MAX_HEADER_FILES\n");
exit(EXIT_FAILURE);
}
g_hdrfiles[nhdrfiles] = strdup(hdrfile);
nhdrfiles++;
}
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
int main(int argc, char **argv, char **envp)
{
char *csvpath;
char *symtab;
char *nextterm;
char *finalterm;
char *ptr;
bool cond;
FILE *instream;
FILE *outstream;
int ch;
int i;
/* Parse command line options */
g_debug = false;
while ((ch = getopt(argc, argv, ":d")) > 0)
{
switch (ch)
{
case 'd' :
g_debug = true;
break;
case '?' :
fprintf(stderr, "Unrecognized option: %c\n", optopt);
show_usage(argv[0]);
case ':' :
fprintf(stderr, "Missing option argument, option: %c\n", optopt);
show_usage(argv[0]);
break;
fprintf(stderr, "Unexpected option: %c\n", ch);
show_usage(argv[0]);
}
}
if (optind >= argc)
{
fprintf(stderr, "Missing <cvs-file> and <symtab-file>\n");
show_usage(argv[0]);
}
csvpath = argv[optind];
optind++;
if (optind >= argc)
{
fprintf(stderr, "Missing <symtab-file>\n");
show_usage(argv[0]);
}
symtab = argv[optind];
optind++;
if (optind < argc)
{
fprintf(stderr, "Unexpected garbage at the end of the line\n");
show_usage(argv[0]);
}
/* Open the CSV file for reading */
instream = fopen(csvpath, "r");
if (!instream)
{
fprintf(stderr, "open %s failed: %s\n", csvpath, strerror(errno));
exit(EXIT_FAILURE);
}
/* Open the Symbol table file for writing */
outstream = fopen(symtab, "w");
if (!outstream)
{
fprintf(stderr, "open %s failed: %s\n", csvpath, strerror(errno));
exit(EXIT_FAILURE);
}
/* Get all of the header files that we need to include */
while ((ptr = read_line(instream)) != NULL)
{
/* Parse the line from the CVS file */
int nargs = parse_csvline(ptr);
if (nargs < PARM1_INDEX)
{
fprintf(stderr, "Only %d arguments found: %s\n", nargs, g_line);
exit(EXIT_FAILURE);
}
/* Add the header file to the list of header files we need to include */
add_hdrfile(g_parm[HEADER_INDEX]);
}
/* Back to the beginning */
rewind(instream);
/* Output up-front file boilerplate */
fprintf(outstream, "/* %s: Auto-generated symbol table. Do not edit */\n\n", symtab);
fprintf(outstream, "#include <nuttx/config.h>\n");
fprintf(outstream, "#include <nuttx/binfmt/symtab.h>\n\n");
/* Output all of the require header files */
for (i = 0; i < nhdrfiles; i++)
{
fprintf(outstream, "#include <%s>\n", g_hdrfiles[i]);
}
/* Now the symbol table itself */
fprintf(outstream, "\nstruct symtab_s %s[] =\n", SYMTAB_NAME);
fprintf(outstream, "{\n");
/* Parse each line in the CVS file */
nextterm = "";
finalterm = "";
while ((ptr = read_line(instream)) != NULL)
{
/* Parse the line from the CVS file */
int nargs = parse_csvline(ptr);
if (nargs < PARM1_INDEX)
{
fprintf(stderr, "Only %d arguments found: %s\n", nargs, g_line);
exit(EXIT_FAILURE);
}
/* Output any conditional compilation */
cond = (g_parm[COND_INDEX] && strlen(g_parm[COND_INDEX]) > 0);
if (cond)
{
fprintf(outstream, "%s#if %s\n", nextterm, g_parm[COND_INDEX]);
nextterm = "";
}
/* Output the symbol table entry */
fprintf(outstream, "%s { \"%s\", (FAR const void *)%s }",
nextterm, g_parm[NAME_INDEX], g_parm[NAME_INDEX]);
if (cond)
{
nextterm = ",\n#endif\n";
finalterm = "\n#endif\n";
}
else
{
nextterm = ",\n";
finalterm = "\n";
}
}
fprintf(outstream, "%s};\n\n", finalterm);
fprintf(outstream, "#define NSYMBOLS (sizeof(%s) / sizeof (struct symtab_s))\n", SYMTAB_NAME);
/* Close the CSV and symbol table files and exit */
fclose(instream);
fclose(outstream);
return EXIT_SUCCESS;
}
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