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[linux] Support reading from stdin.

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This commit is contained in:
Solomon Peachy 2012-10-27 10:32:12 -04:00
parent 8d0515762c
commit 58894f20fa
1 changed files with 29 additions and 15 deletions
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44
es_print_linux.c
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@ -40,24 +40,31 @@
#define BUF_LEN 4096
int dump_data_new(int remaining, int data_fd, int dev_fd, uint8_t *buf, uint16_t buflen)
int dump_data_new(int remaining, int present, int data_fd,
int dev_fd, uint8_t *buf, uint16_t buflen)
{
int cnt;
int i;
int wrote;
while (remaining) {
while (remaining > 0) {
cnt = read(data_fd, buf, (remaining < buflen) ? remaining : buflen);
if (cnt < 0)
return -1;
if (present) {
cnt += present;
present = 0;
}
i = write(dev_fd, buf, cnt);
if (i < 0)
return wrote;
if (i != cnt) { // XXX worth handling this? retry write?
fprintf(stderr, "write mismatch R/W %d/%d ...\n", cnt, i);
return wrote;
if (i != cnt) {
/* Realign buffer.. */
present = cnt - i;
memmove(buf, buf + i, present);
}
wrote += i;
remaining -= cnt;
@ -97,10 +104,13 @@ int main(int argc, char **argv)
}
/* Open input file */
data_fd = open(argv[1], O_RDONLY);
if (data_fd < 0) {
perror("Can't open input file");
exit(1);
data_fd = fileno(stdin);
if (strcmp("-", argv[1])) {
data_fd = open(argv[1], O_RDONLY);
if (data_fd < 0) {
perror("Can't open input file");
exit(1);
}
}
/* Open output device */
@ -125,7 +135,7 @@ int main(int argc, char **argv)
}
/* Figure out printer this file is intended for */
read(data_fd, buffer, MAX_HEADER + 1024); /* Read in header */
read(data_fd, buffer, MAX_HEADER);
if (buffer[0] != 0x40 &&
buffer[1] != 0x00) {
@ -217,6 +227,10 @@ found:
case S_PRINTER_READY:
fprintf(stderr, "Sending init sequence (%d bytes)\n", init_lengths[printer_type]);
write(dev_fd, buffer, init_lengths[printer_type]); /* Send printer_init */
/* Realign plane data to start of buffer.. */
memmove(buffer, buffer+init_lengths[printer_type],
MAX_HEADER-init_lengths[printer_type]);
state = S_PRINTER_INIT_SENT;
break;
case S_PRINTER_INIT_SENT:
@ -229,7 +243,7 @@ found:
fprintf(stderr, "Sending BLACK plane\n");
else
fprintf(stderr, "Sending YELLOW plane\n");
dump_data_new(plane_len, data_fd, dev_fd, buffer, BUF_LEN);
dump_data_new(plane_len, MAX_HEADER-init_lengths[printer_type], data_fd, dev_fd, buffer, BUF_LEN);
state = S_PRINTER_Y_SENT;
break;
case S_PRINTER_Y_SENT:
@ -242,7 +256,7 @@ found:
break;
case S_PRINTER_READY_M:
fprintf(stderr, "Sending MAGENTA plane\n");
dump_data_new(plane_len, data_fd, dev_fd, buffer, BUF_LEN);
dump_data_new(plane_len, 0, data_fd, dev_fd, buffer, BUF_LEN);
state = S_PRINTER_M_SENT;
break;
case S_PRINTER_M_SENT:
@ -252,18 +266,18 @@ found:
break;
case S_PRINTER_READY_C:
fprintf(stderr, "Sending CYAN plane\n");
dump_data_new(plane_len, data_fd, dev_fd, buffer, BUF_LEN);
dump_data_new(plane_len, 0, data_fd, dev_fd, buffer, BUF_LEN);
state = S_PRINTER_C_SENT;
break;
case S_PRINTER_C_SENT:
if (!fancy_memcmp(rdbuf, done_c_readbacks[printer_type], RDBUF_LEN, paper_code_offset, paper_code)) {
if (!fancy_memcmp(rdbuf, done_c_readbacks[printer_type], RDBUF_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_DONE;
}
break;
case S_PRINTER_DONE:
if (foot_lengths[printer_type]) {
fprintf(stderr, "Sending cleanup sequence\n");
dump_data_new(foot_lengths[printer_type], data_fd, dev_fd, buffer, BUF_LEN);
dump_data_new(foot_lengths[printer_type], 0, data_fd, dev_fd, buffer, BUF_LEN);
}
state = S_FINISHED;
break;