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A fair amount of progress!

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XANTRONIX Development 2023-09-11 19:10:48 -04:00
parent dff861680f
commit 8b4a8a933a
1 changed files with 85 additions and 30 deletions
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107
main.c
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@ -6,17 +6,18 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <endian.h>
#include <errno.h>
#define ZXDUMP_STRIDE_LINE 16
#define ZXDUMP_STRIDE_GROUP 2
#define ZXDUMP_CHARSET_LEN 64
#define ZX_DUMP_STRIDE_LINE 16
#define ZX_DUMP_STRIDE_GROUP 2
#define ZX_DUMP_CHARSET_LEN 64
#define ZXDUMP_FLAGS_NONE 0
#define ZXDUMP_FLAGS_BASIC (1 << 0)
#define ZX_DUMP_FLAGS_NONE 0
#define ZX_DUMP_FLAGS_BASIC (1 << 0)
#define ZX_CHAR_LOW(c) \
(c <= ZXDUMP_CHARSET_LEN)
(c <= ZX_DUMP_CHARSET_LEN)
#define ZX_CHAR_INVERSE_START 0x80
#define ZX_CHAR_INVERSE_END 0xbf
@ -30,6 +31,9 @@
#define ZX_CHAR_TOKEN_LOW(c) \
(c >= ZX_CHAR_TOKEN_LOW_START && c <= ZX_CHAR_TOKEN_LOW_END)
#define ZX_CHAR_NEWLINE(c) \
(c == 0x76)
#define ZX_CHAR_TOKEN_HIGH_START 0xc0
#define ZX_CHAR_TOKEN_HIGH_END 0xff
@ -42,7 +46,7 @@ typedef struct _zx_basic_line {
uint16_t num, len;
} zx_basic_line;
static uint32_t zx_charset[ZXDUMP_CHARSET_LEN] = {
static uint32_t zx_charset[ZX_DUMP_CHARSET_LEN] = {
0x0020, 0x2598, 0x259d, 0x2580, 0x2596, 0x258c, 0x259e, 0x259b,
0x2592, '.', '.', '"', 0x00a3, '$', ':', '?',
'(', ')', '>', '<', '=', '+', '-', '*',
@ -128,7 +132,7 @@ static ssize_t hexdump_line(off_t offset, void *buf, size_t len, int tty) {
}
for (i=0; i<len; i++) {
if (i > 0 && (i % ZXDUMP_STRIDE_GROUP) == 0) {
if (i > 0 && (i % ZX_DUMP_STRIDE_GROUP) == 0) {
if (putchar(' ') < 0) {
goto error_io;
}
@ -171,7 +175,7 @@ error_io:
return -1;
}
static ssize_t hexdump_fd(int fd) {
static ssize_t zx_dump_hex(int fd) {
void *buf;
ssize_t total = 0;
int tty = isatty(fileno(stdout));
@ -195,9 +199,9 @@ static ssize_t hexdump_fd(int fd) {
break;
}
for (i=0; i<len; i+=ZXDUMP_STRIDE_LINE) {
for (i=0; i<len; i+=ZX_DUMP_STRIDE_LINE) {
size_t left = len - i,
linesz = left < ZXDUMP_STRIDE_LINE? left: ZXDUMP_STRIDE_LINE;
linesz = left < ZX_DUMP_STRIDE_LINE? left: ZX_DUMP_STRIDE_LINE;
if (hexdump_line(offset, buf, linesz, tty) < 0) {
goto error_hexdump_line;
@ -226,17 +230,22 @@ static inline int zx_print(uint8_t c, int tty) {
return zx_putchar(c, 0);
} else if (ZX_CHAR_TOKEN_LOW(c)) {
return fputs(zx_tokens_low[c - ZX_CHAR_TOKEN_LOW_START], stdout);
} else if (ZX_CHAR_NEWLINE(c)) {
return putchar('\n');
} else if (ZX_CHAR_INVERSE(c)) {
return zx_putchar(c, tty);
return zx_putchar(c - ZX_CHAR_INVERSE_START, tty);
} else if (ZX_CHAR_TOKEN_HIGH(c)) {
return fputs(zx_tokens[c - ZX_CHAR_TOKEN_HIGH_START], stdout);
}
return 0;
}
static ssize_t basic_dump_fd(int fd) {
static ssize_t zx_dump_basic(int fd) {
void *buf;
struct stat st;
ssize_t total = 0;
int tty = isatty(fileno(stdout));
struct stat st;
if (fstat(fd, &st) < 0) {
goto error_fstat;
@ -246,17 +255,52 @@ static ssize_t basic_dump_fd(int fd) {
goto error_malloc;
}
while (1) {
ssize_t len, i;
if (lseek(fd, ZX_BASIC_STATE_LEN, SEEK_CUR) < 0) {
goto error_io;
}
if ((len = read(fd, buf, st.st_blksize)) < 0) {
goto error_read;
} else if (len == 0) {
while (1) {
ssize_t readlen, len, i;
zx_basic_line line;
uint8_t last = 0;
if ((readlen = read(fd, &line, sizeof(line))) < 0) {
goto error_io;
} else if (readlen == 0) {
break;
}
for (i=0; i<len; i++) {
if (printf("%d", (int)be16toh(line.num)) < 0) {
goto error_io;
}
len = le16toh(line.len);
if (read(fd, buf, len) < 0) {
goto error_io;
}
for (i=0; i<len; i++) {
uint8_t c = ((uint8_t *)buf)[i];
if (ZX_CHAR_TOKEN_LOW(c) || ZX_CHAR_TOKEN_HIGH(c)
|| ZX_CHAR_TOKEN_LOW(last) || ZX_CHAR_TOKEN_HIGH(last)) {
if (putchar(' ') < 0) {
goto error_io;
}
}
if (zx_print(c, tty) < 0) {
goto error_io;
}
last = c;
}
if (!ZX_CHAR_NEWLINE(((uint8_t *)buf)[i-1])) {
if (putchar('\n') < 0) {
goto error_io;
}
}
}
@ -264,7 +308,7 @@ static ssize_t basic_dump_fd(int fd) {
return total;
error_read:
error_io:
free(buf);
error_malloc:
@ -288,7 +332,7 @@ static void usage(const char *prog, char *message, ...) {
int main(int argc, char **argv) {
int fd,
flags = ZXDUMP_FLAGS_NONE,
flags = ZX_DUMP_FLAGS_NONE,
argn;
while (1) {
@ -300,7 +344,7 @@ int main(int argc, char **argv) {
switch (c) {
case 'b':
flags |= ZXDUMP_FLAGS_BASIC;
flags |= ZX_DUMP_FLAGS_BASIC;
break;
case '?':
@ -323,13 +367,24 @@ int main(int argc, char **argv) {
usage(argv[0], "Too many arguments provided");
}
if (hexdump_fd(fd) < 0) {
if (flags & ZX_DUMP_FLAGS_BASIC) {
if (zx_dump_basic(fd) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0],
(argn == 1)? argv[optind]: "(stdin)",
strerror(errno));
goto error_hexdump_fd;
goto error_dump;
}
} else {
if (zx_dump_hex(fd) < 0) {
fprintf(stderr, "%s: %s: %s\n",
argv[0],
(argn == 1)? argv[optind]: "(stdin)",
strerror(errno));
goto error_dump;
}
}
if (argn == 1) {
@ -338,7 +393,7 @@ int main(int argc, char **argv) {
return 0;
error_hexdump_fd:
error_dump:
if (argn == 1) {
close(fd);
}