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/*
* Copyright (C) 2016 Bernhard Nortmann <bernhard.nortmann@web.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* unify-fex.c
*
* A utility program to do some standard transformations on .fex files,
* to allow simpler (diff) comparison with the output of bin2fex.
*/
#include <ctype.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* string macro to determine if str starts with a given literal */
#define starts(str, literal) \
(strncmp(str, "" literal, sizeof(literal) - 1) == 0)
int main(int argc, char **argv)
{
FILE *input = stdin;
char line[1024];
char *c, *p;
int64_t num;
if (argc >= 2) {
input = fopen(argv[1], "r");
if (!input) {
perror("failed to open input file");
exit(EXIT_FAILURE);
}
}
/* loop over all input lines, output goes to stdout */
while (fgets(line, sizeof(line), input)) {
/* strip all whitespace (even CR/LF) from the input line */
for (c = p = line; *p; p++) {
if (!isspace(*p))
*c++ = *p;
}
*c = '\0';
if (*line == ';' || *line == '#')
/* This is a comment line, simply ignore it */
continue;
if (*line == ':')
continue; /* suspect malformed comment, ignore */
if ((p = strchr(line, '='))) {
/* This is a <key> = <value> line, reformat it */
c = strdup(p + 1);
sprintf(p, " = %s", c);
free(c);
p += 3; /* have p point to the beginning of <value> */
if (starts(p, "port:")) {
if (p[5] == 'P') { /* port:P... */
/* get pin number (including bank) */
num = ((p[6] - 'A') << 5) + strtoll(p + 7, &c, 10);
c = strdup(c);
sprintf(p, "port:P%c%02" PRId64 "%s", 'A' + (int)(num >> 5), num & 0x1F, c);
free(c);
/* check angle brackets to determine options count */
num = 0;
for (c = p + 9; *c; c++) {
if (*c == '<')
num++;
}
/* append "<default>" for missing options */
c = strrchr(p, '\0');
while (num < 4) {
c += sprintf(c, "<default>");
num++;
}
}
} else {
/*
* fix formatting of numeric values, depending on the keyword
* these are a bit nasty, since they vary wildly between hex
* and decimal - see decompile_single_mode() in script_fex.c
*/
num = strtoll(p, NULL, 0);
if (num || *p == '0') {
int hex = starts(line, "csi_twi_addr");
hex |= starts(line, "ctp_twi_addr");
hex |= starts(line, "dram_baseaddr");
hex |= starts(line, "dram_emr");
hex |= starts(line, "dram_tpr");
hex |= starts(line, "dram_zq");
hex |= starts(line, "g2d_size");
hex |= starts(line, "gsensor_twi_addr");
hex |= starts(line, "lcd_gamma_tbl_");
hex |= starts(line, "rtp_press_threshold ");
hex |= starts(line, "rtp_sensitive_level");
hex |= starts(line, "tkey_twi_addr");
/* large decimals will be decompiled as negative */
if (!hex && num >= 2147483648LL)
num -= 4294967296LL;
sprintf(p, hex ? "0x%" PRIx64 : "%" PRId64, num);
} else {
/*
* We expect all other (= non-numeric) values
* to be strings, always quote them.
*/
if (*p && (*p != '"')) {
c = strdup(p);
sprintf(p, "\"%s\"", c);
free(c);
}
/* Remove a trailing semicolon. */
c = strchr(p, 0);
if (*--c == ';')
*c = '\0';
}
}
}
puts(line);
}
if (ferror(input)) {
perror("file read error");
exit(EXIT_FAILURE);
}
fclose(input);
return EXIT_SUCCESS;
}
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