nuttx/tools/lowhex.c
Alin Jerpelea 7ff60d7c5b tools: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-02-18 11:26:21 -08:00

146 lines
3.9 KiB
C

/****************************************************************************
* tools/lowhex.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <stdbool.h>
#include <ctype.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define LINESIZE 1024
/****************************************************************************
* Private Data
****************************************************************************/
static char g_line[LINESIZE];
/****************************************************************************
* Private Functions
****************************************************************************/
static inline bool isdelimiter(int ch)
{
if (isalnum(ch) || ch == '_')
{
return false;
}
return true;
}
/****************************************************************************
* Public Data
****************************************************************************/
int main(int argc, char **argv)
{
FILE *instream;
FILE *outstream;
bool delimited;
bool inhex;
int ret = 1;
int i;
int j;
if (argc != 3)
{
fprintf(stderr, "ERROR: Two arguments expected\n");
return 1;
}
/* Open the source file read-only */
instream = fopen(argv[1], "r");
if (instream == NULL)
{
fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[1]);
return 1;
}
/* Open the destination file write-only */
outstream = fopen(argv[2], "w");
if (outstream == NULL)
{
fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[2]);
goto errout_with_instream;
}
/* Process each line in the file */
while ((fgets(g_line, LINESIZE, instream) != NULL))
{
/* Search for a '0x' that preceding some delimiting character */
delimited = true;
inhex = false;
for (i = 0;
i < LINESIZE && g_line[i] != '\n' && g_line[i] != '\0';
i++)
{
if (inhex)
{
if (isxdigit(g_line[i]))
{
g_line[i] = tolower(g_line[i]);
}
else
{
inhex = false;
}
}
else if (delimited && g_line[i] == '0')
{
j = i + 1;
if (j < LINESIZE)
{
if (g_line[j] == 'x' || g_line[j] == 'X')
{
g_line[j] = tolower(g_line[j]);
inhex = true;
i = j;
}
}
}
else
{
delimited = isdelimiter(g_line[i]);
}
}
fputs(g_line, outstream);
}
ret = 0;
fclose(outstream);
errout_with_instream:
fclose(instream);
return ret;
}