846 lines
21 KiB
C
846 lines
21 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Support code for the hexdump and od applets,
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* based on code from util-linux v 2.11l
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*
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* Copyright (c) 1989
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* The Regents of the University of California. All rights reserved.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*
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* Original copyright notice is retained at the end of this file.
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*/
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#include "libbb.h"
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#include "dump.h"
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static const char dot_flags_width_chars[] ALIGN1 = ".#-+ 0123456789";
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static const char size_conv_str[] ALIGN1 =
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"\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
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static const char int_convs[] ALIGN1 = "diouxX";
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typedef struct priv_dumper_t {
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dumper_t pub;
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char **argv;
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FU *endfu;
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off_t savaddress; /* saved address/offset in stream */
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off_t eaddress; /* end address */
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off_t address; /* address/offset in stream */
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int blocksize;
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smallint exitval; /* final exit value */
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/* former statics */
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smallint next__done;
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smallint get__ateof; // = 1;
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unsigned char *get__curp;
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unsigned char *get__savp;
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} priv_dumper_t;
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dumper_t* FAST_FUNC alloc_dumper(void)
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{
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priv_dumper_t *dumper = xzalloc(sizeof(*dumper));
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dumper->pub.dump_length = -1;
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dumper->pub.dump_vflag = FIRST;
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dumper->get__ateof = 1;
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return &dumper->pub;
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}
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static NOINLINE int bb_dump_size(FS *fs)
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{
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FU *fu;
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int bcnt, cur_size;
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char *fmt;
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const char *p;
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int prec;
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/* figure out the data block size needed for each format unit */
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for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
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if (fu->bcnt) {
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cur_size += fu->bcnt * fu->reps;
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continue;
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}
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for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
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if (*fmt != '%')
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continue;
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/*
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* skip any special chars -- save precision in
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* case it's a %s format.
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*/
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while (strchr(dot_flags_width_chars + 1, *++fmt))
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continue;
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if (*fmt == '.' && isdigit(*++fmt)) {
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prec = atoi(fmt);
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while (isdigit(*++fmt))
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continue;
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}
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p = strchr(size_conv_str + 12, *fmt);
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if (!p) {
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if (*fmt == 's') {
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bcnt += prec;
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}
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if (*fmt == '_') {
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++fmt;
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if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
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bcnt += 1;
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}
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}
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} else {
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bcnt += p[-12];
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}
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}
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cur_size += bcnt * fu->reps;
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}
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return cur_size;
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}
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static NOINLINE void rewrite(priv_dumper_t *dumper, FS *fs)
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{
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FU *fu;
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for (fu = fs->nextfu; fu; fu = fu->nextfu) {
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PR *pr;
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char *p1, *p2, *p3;
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char *fmtp;
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int nconv = 0;
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/*
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* break each format unit into print units; each
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* conversion character gets its own.
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*/
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for (fmtp = fu->fmt; *fmtp; ) {
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unsigned len;
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const char *prec;
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const char *byte_count_str;
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/* DBU:[dvae@cray.com] zalloc so that forward ptrs start out NULL */
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pr = xzalloc(sizeof(*pr));
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if (!fu->nextpr)
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fu->nextpr = pr;
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/* skip preceding text and up to the next % sign */
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p1 = strchr(fmtp, '%');
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if (!p1) { /* only text in the string */
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pr->fmt = fmtp;
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pr->flags = F_TEXT;
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break;
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}
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/*
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* get precision for %s -- if have a byte count, don't
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* need it.
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*/
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prec = NULL;
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if (fu->bcnt) {
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/* skip to conversion character */
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while (strchr(dot_flags_width_chars, *++p1))
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continue;
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} else {
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/* skip any special chars, field width */
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while (strchr(dot_flags_width_chars + 1, *++p1))
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continue;
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if (*p1 == '.' && isdigit(*++p1)) {
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prec = p1;
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while (isdigit(*++p1))
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continue;
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}
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}
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p2 = p1 + 1; /* set end pointer */
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/*
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* figure out the byte count for each conversion;
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* rewrite the format as necessary, set up blank-
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* padding for end of data.
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*/
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if (*p1 == 'c') {
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pr->flags = F_CHAR;
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DO_BYTE_COUNT_1:
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byte_count_str = "\001";
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DO_BYTE_COUNT:
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if (fu->bcnt) {
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for (;;) {
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if (fu->bcnt == *byte_count_str)
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break;
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if (*++byte_count_str == 0)
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bb_error_msg_and_die("bad byte count for conversion character %s", p1);
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}
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}
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/* Unlike the original, output the remainder of the format string. */
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pr->bcnt = *byte_count_str;
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} else
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if (*p1 == 'l') { /* %ld etc */
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const char *e;
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++p2;
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++p1;
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DO_INT_CONV:
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e = strchr(int_convs, *p1); /* "diouxX"? */
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if (!e)
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goto DO_BAD_CONV_CHAR;
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pr->flags = F_INT;
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if (e > int_convs + 1) /* not d or i? */
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pr->flags = F_UINT;
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byte_count_str = "\004\002\001";
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goto DO_BYTE_COUNT;
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} else
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if (strchr(int_convs, *p1)) { /* %d etc */
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goto DO_INT_CONV;
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} else
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if (strchr("eEfgG", *p1)) { /* floating point */
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pr->flags = F_DBL;
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byte_count_str = "\010\004";
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goto DO_BYTE_COUNT;
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} else
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if (*p1 == 's') {
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pr->flags = F_STR;
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pr->bcnt = fu->bcnt;
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if (fu->bcnt == 0) {
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if (!prec)
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bb_error_msg_and_die("%%s needs precision or byte count");
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pr->bcnt = atoi(prec);
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}
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} else
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if (*p1 == '_') {
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p2++; /* move past a in "%_a" */
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switch (p1[1]) {
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case 'A': /* %_A[dox]: print address and the end */
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dumper->endfu = fu;
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fu->flags |= F_IGNORE;
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/* FALLTHROUGH */
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case 'a': /* %_a[dox]: current address */
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pr->flags = F_ADDRESS;
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p2++; /* move past x in "%_ax" */
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if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
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goto DO_BAD_CONV_CHAR;
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}
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*p1 = p1[2];
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break;
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case 'c': /* %_c: chars, \ooo, \n \r \t etc */
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pr->flags = F_C;
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/* *p1 = 'c'; set in conv_c */
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goto DO_BYTE_COUNT_1;
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case 'p': /* %_p: chars, dots for nonprintable */
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pr->flags = F_P;
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*p1 = 'c';
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goto DO_BYTE_COUNT_1;
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case 'u': /* %_p: chars, 'nul', 'esc' etc for nonprintable */
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pr->flags = F_U;
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/* *p1 = 'c'; set in conv_u */
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goto DO_BYTE_COUNT_1;
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default:
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goto DO_BAD_CONV_CHAR;
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}
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} else {
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DO_BAD_CONV_CHAR:
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bb_error_msg_and_die("bad conversion character %%%s", p1);
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}
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/*
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* copy to PR format string, set conversion character
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* pointer, update original.
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*/
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len = (p1 - fmtp) + 1;
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pr->fmt = xstrndup(fmtp, len);
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/* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
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* Skip subsequent text and up to the next % sign and tack the
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* additional text onto fmt: eg. if fmt is "%x is a HEX number",
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* we lose the " is a HEX number" part of fmt.
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*/
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for (p3 = p2; *p3 && *p3 != '%'; p3++)
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continue;
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if ((p3 - p2) != 0) {
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char *d;
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pr->fmt = d = xrealloc(pr->fmt, len + (p3 - p2) + 1);
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d += len;
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do {
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*d++ = *p2++;
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} while (p2 != p3);
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*d = '\0';
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/* now p2 = p3 */
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}
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pr->cchar = pr->fmt + len - 1; /* must be after realloc! */
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fmtp = p2;
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/* only one conversion character if byte count */
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if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
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bb_error_msg_and_die("byte count with multiple conversion characters");
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}
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}
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/*
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* if format unit byte count not specified, figure it out
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* so can adjust rep count later.
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*/
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if (fu->bcnt == 0)
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for (pr = fu->nextpr; pr; pr = pr->nextpr)
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fu->bcnt += pr->bcnt;
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}
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/*
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* if the format string interprets any data at all, and it's
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* not the same as the blocksize, and its last format unit
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* interprets any data at all, and has no iteration count,
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* repeat it as necessary.
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*
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* if rep count is greater than 1, no trailing whitespace
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* gets output from the last iteration of the format unit.
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*/
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for (fu = fs->nextfu; fu; fu = fu->nextfu) {
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if (!fu->nextfu
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&& fs->bcnt < dumper->blocksize
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&& !(fu->flags & F_SETREP)
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&& fu->bcnt
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) {
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fu->reps += (dumper->blocksize - fs->bcnt) / fu->bcnt;
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}
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if (fu->reps > 1 && fu->nextpr) {
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PR *pr;
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char *p1, *p2;
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for (pr = fu->nextpr;; pr = pr->nextpr)
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if (!pr->nextpr)
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break;
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p2 = NULL;
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for (p1 = pr->fmt; *p1; ++p1)
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p2 = isspace(*p1) ? p1 : NULL;
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if (p2)
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pr->nospace = p2;
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}
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}
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}
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static void do_skip(priv_dumper_t *dumper, const char *fname)
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{
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struct stat sbuf;
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xfstat(STDIN_FILENO, &sbuf, fname);
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if (S_ISREG(sbuf.st_mode)
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&& dumper->pub.dump_skip >= sbuf.st_size
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) {
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/* If st_size is valid and pub.dump_skip >= st_size */
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dumper->pub.dump_skip -= sbuf.st_size;
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dumper->address += sbuf.st_size;
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return;
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}
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if (fseeko(stdin, dumper->pub.dump_skip, SEEK_SET)) {
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bb_simple_perror_msg_and_die(fname);
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}
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dumper->address += dumper->pub.dump_skip;
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dumper->savaddress = dumper->address;
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dumper->pub.dump_skip = 0;
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}
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static NOINLINE int next(priv_dumper_t *dumper)
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{
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for (;;) {
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const char *fname = *dumper->argv;
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if (fname) {
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dumper->argv++;
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if (NOT_LONE_DASH(fname)) {
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if (!freopen(fname, "r", stdin)) {
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bb_simple_perror_msg(fname);
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dumper->exitval = 1;
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continue;
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}
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}
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} else {
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if (dumper->next__done)
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return 0; /* no next file */
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}
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dumper->next__done = 1;
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if (dumper->pub.dump_skip)
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do_skip(dumper, fname ? fname : "stdin");
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if (dumper->pub.dump_skip == 0)
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return 1;
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}
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/* NOTREACHED */
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}
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static unsigned char *get(priv_dumper_t *dumper)
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{
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int n;
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int need, nread;
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int blocksize = dumper->blocksize;
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if (!dumper->get__curp) {
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dumper->address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
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dumper->get__curp = xmalloc(blocksize);
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dumper->get__savp = xzalloc(blocksize); /* need to be initialized */
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} else {
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unsigned char *tmp = dumper->get__curp;
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dumper->get__curp = dumper->get__savp;
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dumper->get__savp = tmp;
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dumper->savaddress += blocksize;
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dumper->address = dumper->savaddress;
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}
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need = blocksize;
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nread = 0;
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while (1) {
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/*
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* if read the right number of bytes, or at EOF for one file,
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* and no other files are available, zero-pad the rest of the
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* block and set the end flag.
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*/
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if (!dumper->pub.dump_length || (dumper->get__ateof && !next(dumper))) {
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if (need == blocksize) {
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return NULL;
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}
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if (dumper->pub.dump_vflag != ALL /* not "show all"? */
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&& dumper->pub.dump_vflag != FIRST /* not first line? */
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&& memcmp(dumper->get__curp, dumper->get__savp, nread) == 0 /* same data? */
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) {
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if (dumper->pub.dump_vflag != DUP) {
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puts("*");
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}
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return NULL;
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}
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memset(dumper->get__curp + nread, 0, need);
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dumper->eaddress = dumper->address + nread;
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return dumper->get__curp;
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}
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n = fread(dumper->get__curp + nread, sizeof(unsigned char),
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dumper->pub.dump_length == -1 ? need : MIN(dumper->pub.dump_length, need), stdin);
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if (n == 0) {
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if (ferror(stdin)) {
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bb_simple_perror_msg(dumper->argv[-1]);
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}
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dumper->get__ateof = 1;
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continue;
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}
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dumper->get__ateof = 0;
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if (dumper->pub.dump_length != -1) {
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dumper->pub.dump_length -= n;
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}
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need -= n;
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if (need == 0) {
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if (dumper->pub.dump_vflag == ALL /* "show all"? */
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|| dumper->pub.dump_vflag == FIRST /* first line? */
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|| memcmp(dumper->get__curp, dumper->get__savp, blocksize) != 0 /* not same data? */
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) {
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if (dumper->pub.dump_vflag == DUP || dumper->pub.dump_vflag == FIRST) {
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dumper->pub.dump_vflag = WAIT;
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}
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return dumper->get__curp;
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}
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if (dumper->pub.dump_vflag == WAIT) {
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puts("*");
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}
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dumper->pub.dump_vflag = DUP;
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dumper->savaddress += blocksize;
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dumper->address = dumper->savaddress;
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need = blocksize;
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nread = 0;
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} else {
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nread += n;
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}
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}
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}
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static void bpad(PR *pr)
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{
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char *p1, *p2;
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/*
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* remove all conversion flags; '-' is the only one valid
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* with %s, and it's not useful here.
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*/
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pr->flags = F_BPAD;
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*pr->cchar = 's';
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for (p1 = pr->fmt; *p1 != '%'; ++p1)
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continue;
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for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1)
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if (pr->nospace)
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pr->nospace--;
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while ((*p2++ = *p1++) != 0)
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continue;
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}
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static const char conv_str[] ALIGN1 =
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"\0" "\\""0""\0"
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"\007""\\""a""\0" /* \a */
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"\b" "\\""b""\0"
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"\f" "\\""f""\0"
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"\n" "\\""n""\0"
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"\r" "\\""r""\0"
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"\t" "\\""t""\0"
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"\v" "\\""v""\0"
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;
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static void conv_c(PR *pr, unsigned char *p)
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{
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const char *str = conv_str;
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do {
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if (*p == *str) {
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++str;
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goto strpr; /* map e.g. '\n' to "\\n" */
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}
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str += 4;
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} while (*str);
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if (isprint_asciionly(*p)) {
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*pr->cchar = 'c';
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printf(pr->fmt, *p);
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} else {
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char buf[4];
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/* gcc-8.0.1 needs lots of casts to shut up */
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sprintf(buf, "%03o", (unsigned)(uint8_t)*p);
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str = buf;
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strpr:
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*pr->cchar = 's';
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printf(pr->fmt, str);
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}
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}
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static void conv_u(PR *pr, unsigned char *p)
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{
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static const char list[] ALIGN1 =
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"nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
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"bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
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"dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
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"can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
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/* od used nl, not lf */
|
|
if (*p <= 0x1f) {
|
|
*pr->cchar = 's';
|
|
printf(pr->fmt, list + (4 * (int)*p));
|
|
} else if (*p == 0x7f) {
|
|
*pr->cchar = 's';
|
|
printf(pr->fmt, "del");
|
|
} else if (*p < 0x7f) { /* isprint() */
|
|
*pr->cchar = 'c';
|
|
printf(pr->fmt, *p);
|
|
} else {
|
|
*pr->cchar = 'x';
|
|
printf(pr->fmt, (int) *p);
|
|
}
|
|
}
|
|
|
|
static void display(priv_dumper_t* dumper)
|
|
{
|
|
FS *fs;
|
|
FU *fu;
|
|
PR *pr;
|
|
int cnt;
|
|
unsigned char *bp, *savebp;
|
|
off_t saveaddress;
|
|
unsigned char savech = '\0';
|
|
|
|
while ((bp = get(dumper)) != NULL) {
|
|
fs = dumper->pub.fshead;
|
|
savebp = bp;
|
|
saveaddress = dumper->address;
|
|
for (; fs; fs = fs->nextfs, bp = savebp, dumper->address = saveaddress) {
|
|
for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
|
if (fu->flags & F_IGNORE) {
|
|
break;
|
|
}
|
|
for (cnt = fu->reps; cnt; --cnt) {
|
|
for (pr = fu->nextpr; pr; dumper->address += pr->bcnt,
|
|
bp += pr->bcnt, pr = pr->nextpr) {
|
|
if (dumper->eaddress && dumper->address >= dumper->eaddress
|
|
&& !(pr->flags & (F_TEXT | F_BPAD))
|
|
) {
|
|
bpad(pr);
|
|
}
|
|
if (cnt == 1 && pr->nospace) {
|
|
savech = *pr->nospace;
|
|
*pr->nospace = '\0';
|
|
}
|
|
/* PRINT; */
|
|
switch (pr->flags) {
|
|
case F_ADDRESS:
|
|
printf(pr->fmt, (unsigned) dumper->address);
|
|
break;
|
|
case F_BPAD:
|
|
printf(pr->fmt, "");
|
|
break;
|
|
case F_C:
|
|
conv_c(pr, bp);
|
|
break;
|
|
case F_CHAR:
|
|
printf(pr->fmt, *bp);
|
|
break;
|
|
case F_DBL: {
|
|
double dval;
|
|
float fval;
|
|
|
|
switch (pr->bcnt) {
|
|
case 4:
|
|
memcpy(&fval, bp, sizeof(fval));
|
|
printf(pr->fmt, fval);
|
|
break;
|
|
case 8:
|
|
memcpy(&dval, bp, sizeof(dval));
|
|
printf(pr->fmt, dval);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case F_INT: {
|
|
int ival;
|
|
short sval;
|
|
|
|
switch (pr->bcnt) {
|
|
case 1:
|
|
printf(pr->fmt, (int) *bp);
|
|
break;
|
|
case 2:
|
|
memcpy(&sval, bp, sizeof(sval));
|
|
printf(pr->fmt, (int) sval);
|
|
break;
|
|
case 4:
|
|
memcpy(&ival, bp, sizeof(ival));
|
|
printf(pr->fmt, ival);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case F_P:
|
|
printf(pr->fmt, isprint_asciionly(*bp) ? *bp : '.');
|
|
break;
|
|
case F_STR:
|
|
printf(pr->fmt, (char *) bp);
|
|
break;
|
|
case F_TEXT:
|
|
printf(pr->fmt);
|
|
break;
|
|
case F_U:
|
|
conv_u(pr, bp);
|
|
break;
|
|
case F_UINT: {
|
|
unsigned ival;
|
|
unsigned short sval;
|
|
|
|
switch (pr->bcnt) {
|
|
case 1:
|
|
printf(pr->fmt, (unsigned) *bp);
|
|
break;
|
|
case 2:
|
|
memcpy(&sval, bp, sizeof(sval));
|
|
printf(pr->fmt, (unsigned) sval);
|
|
break;
|
|
case 4:
|
|
memcpy(&ival, bp, sizeof(ival));
|
|
printf(pr->fmt, ival);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (cnt == 1 && pr->nospace) {
|
|
*pr->nospace = savech;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (dumper->endfu) {
|
|
/*
|
|
* if eaddress not set, error or file size was multiple
|
|
* of blocksize, and no partial block ever found.
|
|
*/
|
|
if (!dumper->eaddress) {
|
|
if (!dumper->address) {
|
|
return;
|
|
}
|
|
dumper->eaddress = dumper->address;
|
|
}
|
|
for (pr = dumper->endfu->nextpr; pr; pr = pr->nextpr) {
|
|
switch (pr->flags) {
|
|
case F_ADDRESS:
|
|
printf(pr->fmt, (unsigned) dumper->eaddress);
|
|
break;
|
|
case F_TEXT:
|
|
printf(pr->fmt);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#define dumper ((priv_dumper_t*)pub_dumper)
|
|
int FAST_FUNC bb_dump_dump(dumper_t *pub_dumper, char **argv)
|
|
{
|
|
FS *tfs;
|
|
int blocksize;
|
|
|
|
/* figure out the data block size */
|
|
blocksize = 0;
|
|
tfs = dumper->pub.fshead;
|
|
while (tfs) {
|
|
tfs->bcnt = bb_dump_size(tfs);
|
|
if (blocksize < tfs->bcnt) {
|
|
blocksize = tfs->bcnt;
|
|
}
|
|
tfs = tfs->nextfs;
|
|
}
|
|
dumper->blocksize = blocksize;
|
|
|
|
/* rewrite the rules, do syntax checking */
|
|
for (tfs = dumper->pub.fshead; tfs; tfs = tfs->nextfs) {
|
|
rewrite(dumper, tfs);
|
|
}
|
|
|
|
dumper->argv = argv;
|
|
display(dumper);
|
|
|
|
return dumper->exitval;
|
|
}
|
|
|
|
void FAST_FUNC bb_dump_add(dumper_t* pub_dumper, const char *fmt)
|
|
{
|
|
const char *p;
|
|
FS *tfs;
|
|
FU *tfu, **nextfupp;
|
|
const char *savep;
|
|
|
|
/* start new linked list of format units */
|
|
tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
|
|
if (!dumper->pub.fshead) {
|
|
dumper->pub.fshead = tfs;
|
|
} else {
|
|
FS *fslast = dumper->pub.fshead;
|
|
while (fslast->nextfs)
|
|
fslast = fslast->nextfs;
|
|
fslast->nextfs = tfs;
|
|
}
|
|
nextfupp = &tfs->nextfu;
|
|
|
|
/* take the format string and break it up into format units */
|
|
p = fmt;
|
|
for (;;) {
|
|
p = skip_whitespace(p);
|
|
if (*p == '\0') {
|
|
break;
|
|
}
|
|
|
|
/* allocate a new format unit and link it in */
|
|
/* NOSTRICT */
|
|
/* DBU:[dave@cray.com] zalloc so that forward pointers start out NULL */
|
|
tfu = xzalloc(sizeof(FU));
|
|
*nextfupp = tfu;
|
|
nextfupp = &tfu->nextfu;
|
|
tfu->reps = 1;
|
|
|
|
/* if leading digit, repetition count */
|
|
if (isdigit(*p)) {
|
|
for (savep = p; isdigit(*p); ++p)
|
|
continue;
|
|
if (!isspace(*p) && *p != '/') {
|
|
bb_error_msg_and_die("bad format {%s}", fmt);
|
|
}
|
|
/* may overwrite either white space or slash */
|
|
tfu->reps = atoi(savep);
|
|
tfu->flags = F_SETREP;
|
|
/* skip trailing white space */
|
|
p = skip_whitespace(++p);
|
|
}
|
|
|
|
/* skip slash and trailing white space */
|
|
if (*p == '/') {
|
|
p = skip_whitespace(p + 1);
|
|
}
|
|
|
|
/* byte count */
|
|
if (isdigit(*p)) {
|
|
// TODO: use bb_strtou
|
|
savep = p;
|
|
while (isdigit(*++p))
|
|
continue;
|
|
if (!isspace(*p)) {
|
|
bb_error_msg_and_die("bad format {%s}", fmt);
|
|
}
|
|
// Above check prohibits formats such as '/1"%02x"' - it requires space after 1.
|
|
// Other than this, formats can be pretty much jammed together:
|
|
// "%07_ax:"8/2 "%04x|""\n"
|
|
// but this space is required. The check *can* be removed, but
|
|
// keeping it to stay compat with util-linux hexdump.
|
|
tfu->bcnt = atoi(savep);
|
|
/* skip trailing white space */
|
|
p = skip_whitespace(p + 1);
|
|
}
|
|
|
|
/* format */
|
|
if (*p != '"') {
|
|
bb_error_msg_and_die("bad format {%s}", fmt);
|
|
}
|
|
for (savep = ++p; *p != '"';) {
|
|
if (*p++ == '\0') {
|
|
bb_error_msg_and_die("bad format {%s}", fmt);
|
|
}
|
|
}
|
|
tfu->fmt = xstrndup(savep, p - savep);
|
|
|
|
/* alphabetic escape sequences have to be done in place */
|
|
strcpy_and_process_escape_sequences(tfu->fmt, tfu->fmt);
|
|
/* unknown mappings are not changed: "\z" -> '\\' 'z' */
|
|
/* trailing backslash, if any, is preserved */
|
|
#if 0
|
|
char *p1;
|
|
char *p2;
|
|
p1 = tfu->fmt;
|
|
for (p2 = p1;; ++p1, ++p2) {
|
|
*p2 = *p1;
|
|
if (*p1 == '\0')
|
|
break;
|
|
|
|
if (*p1 == '\\') {
|
|
const char *cs;
|
|
|
|
p1++;
|
|
*p2 = *p1;
|
|
if (*p1 == '\0') {
|
|
/* "...\" trailing backslash. Eaten. */
|
|
break;
|
|
}
|
|
cs = conv_str + 4; /* skip NUL element */
|
|
do {
|
|
/* map e.g. "\n" -> '\n' */
|
|
if (*p1 == cs[2]) {
|
|
*p2 = cs[0];
|
|
break;
|
|
}
|
|
cs += 4;
|
|
} while (*cs);
|
|
/* unknown mappings remove bkslash: "\z" -> 'z' */
|
|
}
|
|
}
|
|
#endif
|
|
|
|
p++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copyright (c) 1989 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* 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 of the University 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 REGENTS 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 REGENTS 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.
|
|
*/
|