362 lines
6.3 KiB
C
362 lines
6.3 KiB
C
/* MSPDebug - debugging tool for MSP430 MCUs
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* Copyright (C) 2009, 2010 Daniel Beer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <time.h>
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#ifdef __Windows__
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#include <windows.h>
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#endif
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#include "ctrlc.h"
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#include "util.h"
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#include "output.h"
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char *get_arg(char **text)
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{
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char *start;
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char *rewrite;
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char *end;
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int qstate = 0;
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int qval = 0;
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if (!text)
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return NULL;
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start = *text;
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while (*start && isspace(*start))
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start++;
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if (!*start)
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return NULL;
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/* We've found the start of the argument. Parse it. */
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end = start;
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rewrite = start;
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while (*end) {
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switch (qstate) {
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case 0: /* Bare */
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if (isspace(*end))
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goto out;
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else if (*end == '"')
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qstate = 1;
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else if (*end == '\'')
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qstate = 2;
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else
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*(rewrite++) = *end;
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break;
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case 1: /* In quotes */
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if (*end == '"')
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qstate = 0;
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else if (*end == '\'')
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qstate = 3;
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else if (*end == '\\')
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qstate = 4;
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else
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*(rewrite++) = *end;
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break;
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case 2: /* In quote (verbatim) */
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case 3:
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if (*end == '\'')
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qstate -= 2;
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else
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*(rewrite++) = *end;
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break;
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case 4: /* Backslash */
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if (*end == '\\')
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*(rewrite++) = '\\';
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else if (*end == '\'')
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*(rewrite++) = '\'';
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else if (*end == 'n')
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*(rewrite++) = '\n';
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else if (*end == 'r')
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*(rewrite++) = '\r';
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else if (*end == 't')
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*(rewrite++) = '\t';
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else if (*end >= '0' && *end <= '3') {
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qstate = 50;
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qval = *end - '0';
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} else if (*end == 'x') {
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qstate = 60;
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qval = 0;
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} else
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*(rewrite++) = *end;
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if (qstate == 4)
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qstate = 1;
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break;
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case 50: /* Octal */
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case 51:
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if (*end >= '0' && *end <= '7')
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qval = (qval << 3) | (*end - '0');
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if (qstate == 51) {
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*(rewrite++) = qval;
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qstate = 1;
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} else {
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qstate++;
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}
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break;
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case 60: /* Hex */
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case 61:
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if (isdigit(*end))
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qval = (qval << 4) | (*end - '0');
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else if (isupper(*end))
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qval = (qval << 4) | (*end - 'A' + 10);
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else if (islower(*end))
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qval = (qval << 4) | (*end - 'a' + 10);
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if (qstate == 61) {
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*(rewrite++) = qval;
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qstate = 1;
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} else {
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qstate++;
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}
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break;
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}
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end++;
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}
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out:
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/* Leave the text pointer at the end of the next argument */
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while (*end && isspace(*end))
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end++;
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*rewrite = 0;
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*text = end;
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return start;
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}
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void debug_hexdump(const char *label, const uint8_t *data, int len)
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{
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int offset = 0;
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printc("%s [0x%x bytes]\n", label, len);
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while (offset < len) {
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int i;
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printc(" ");
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for (i = 0; i < 16 && offset + i < len; i++)
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printc("%02x ", data[offset + i]);
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printc("\n");
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offset += i;
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}
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}
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int hexval(int c)
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{
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if (isdigit(c))
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return c - '0';
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if (isupper(c))
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return c - 'A' + 10;
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if (islower(c))
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return c - 'a' + 10;
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return 0;
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}
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#ifdef __Windows__
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char *strsep(char **strp, const char *delim)
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{
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char *start = *strp;
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char *end = start;
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if (!start)
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return NULL;
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while (*end) {
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const char *d = delim;
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while (*d) {
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if (*d == *end) {
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*(end++) = 0;
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*strp = end;
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return start;
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}
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d++;
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}
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end++;
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}
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*strp = NULL;
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return start;
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}
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#endif
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#ifdef __Windows__
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const char *last_error(void)
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{
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DWORD err = GetLastError();
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static char msg_buf[128];
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int len;
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FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0,
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msg_buf, sizeof(msg_buf), NULL);
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/* Trim trailing newline characters */
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len = strlen(msg_buf);
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while (len > 0 && isspace(msg_buf[len - 1]))
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len--;
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msg_buf[len] = 0;
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return msg_buf;
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}
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#else
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const char *last_error(void)
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{
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return strerror(errno);
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}
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#endif
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/* Expand leading `~/' in path names. Caller must free the returned ptr */
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char *expand_tilde(const char *path)
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{
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char *home, *expanded;
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size_t len;
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if (!path)
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return NULL;
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if (!*path)
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return strdup("");
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expanded = NULL;
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if (*path == '~' && *(path + 1) == '/') {
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home = getenv("HOME");
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if (home) {
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/* Trailing '\0' will fit in leading '~'s place */
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len = strlen(home) + strlen(path);
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expanded = (char *)malloc(len);
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if (expanded)
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snprintf(expanded, len, "%s%s", home, path + 1);
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else
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printc_err("%s: malloc: %s\n", __FUNCTION__,
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last_error());
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} else {
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printc_err("%s: getenv: %s\n", __FUNCTION__,
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last_error());
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}
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} else {
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expanded = strdup(path);
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if (!expanded)
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printc_err("%s: malloc: %s\n", __FUNCTION__,
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last_error());
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}
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/* Caller must free()! */
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return expanded;
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}
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#ifdef __Windows__
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int delay_s(unsigned int s)
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{
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Sleep(s * 1000);
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return 0;
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}
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int delay_ms(unsigned int s)
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{
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Sleep(s);
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return 0;
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}
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#else
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int delay_s(unsigned int s)
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{
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return delay_ms(1000 * s);
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}
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int delay_ms(unsigned int s)
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{
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struct timespec rq, rm;
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int ret;
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rm.tv_sec = s / 1000;
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rm.tv_nsec = (s % 1000) * 1000000;
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do {
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if (ctrlc_check()) {
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ret = -1;
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break;
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}
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rq.tv_sec = rm.tv_sec;
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rq.tv_nsec = rm.tv_nsec;
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ret = nanosleep(&rq, &rm);
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} while(ret == -1 && errno == EINTR);
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return ret;
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}
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#endif
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int base64_encode(const uint8_t *src, int len, char *dst, int max_len)
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{
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static const char basis[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz0123456789+/";
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int i = 0;
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int k = 0;
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while ((i < len) && (k + 4) < max_len) {
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int a = src[i++];
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dst[k++] = basis[a >> 2];
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if (i < len) {
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int b = src[i++];
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dst[k++] = basis[((a & 3) << 4) | (b & 0xf0) >> 4];
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if (i < len) {
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int c = src[i++];
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dst[k++] = basis[((b & 0xf) << 2) |
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((c & 0xc0) >> 6)];
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dst[k++] = basis[c & 0x3f];
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} else {
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dst[k++] = basis[(b & 0xf) << 2];
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dst[k++] = '=';
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}
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} else {
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dst[k++] = basis[(a & 3) << 4];
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dst[k++] = '=';
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dst[k++] = '=';
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}
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}
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dst[k] = 0;
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return i;
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}
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