+/* vi: set sw=4 ts=4: */
/*
* Derived from
* mapscrn.c - version 0.92
* Peter Novodvorsky <petya@logic.ru>
*/
+#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <sys/ioctl.h>
#include <sys/kd.h>
+static const char loadacm_usage[] = "loadacm\n"
+#ifndef BB_FEATURE_TRIVIAL_HELP
+ "\nLoads an acm from standard input.\n"
+#endif
+ ;
+
typedef unsigned short unicode;
static long int ctoi(unsigned char *s, int *is_unicode);
-int old_screen_map_read_ascii(FILE *fp, unsigned char buf[]);
-int uni_screen_map_read_ascii(FILE *fp, unicode buf[], int* is_unicode);
-unicode utf8_to_ucs2 (char* buf);
-int screen_map_load(int fd, FILE *fp);
+int old_screen_map_read_ascii(FILE * fp, unsigned char buf[]);
+int uni_screen_map_read_ascii(FILE * fp, unicode buf[], int *is_unicode);
+unicode utf8_to_ucs2(char *buf);
+int screen_map_load(int fd, FILE * fp);
int loadacm_main(int argc, char **argv)
{
- int fd;
-
- fd = open("/dev/tty", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty1: %s\n", strerror(errno));
- return 1;
- }
-
- if (screen_map_load(fd, stdin))
- {
- fprintf(stderr, "Error loading acm: %s\n", strerror(errno));
- return 1;
- }
-
- write(fd, "\033(K", 3);
-
- return 0;
+ int fd;
+
+ if (argc>=2 && *argv[1]=='-') {
+ usage(loadacm_usage);
+ }
+
+ fd = open("/dev/tty", O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "Error opening /dev/tty1: %s\n", strerror(errno));
+ return( FALSE);
+ }
+
+ if (screen_map_load(fd, stdin)) {
+ fprintf(stderr, "Error loading acm: %s\n", strerror(errno));
+ return( FALSE);
+ }
+
+ write(fd, "\033(K", 3);
+
+ return( TRUE);
}
-int screen_map_load(int fd, FILE *fp)
+int screen_map_load(int fd, FILE * fp)
{
- struct stat stbuf;
- unicode wbuf[E_TABSZ];
- unsigned char buf[E_TABSZ];
- int parse_failed = 0;
- int is_unicode;
-
- if (fstat(fp->_fileno, &stbuf))
- perror("Cannot stat map file"), exit(1);
-
- /* first try a UTF screen-map: either ASCII (no restriction) or binary (regular file) */
- if (!(parse_failed = (-1 == uni_screen_map_read_ascii(fp,wbuf,&is_unicode))) ||
- (S_ISREG(stbuf.st_mode) &&
- (stbuf.st_size == (sizeof(unicode) * E_TABSZ)))) /* test for binary UTF map by size */
- {
- if (parse_failed)
- {
- if (-1 == fseek (fp, 0, SEEK_SET))
- {
- if (errno == ESPIPE)
- fprintf (stderr, "16bit screen-map MUST be a regular file.\n"), exit (1);
- else
- perror ("fseek failed reading binary 16bit screen-map"), exit (1);
- }
-
- if (fread(wbuf, sizeof(unicode) * E_TABSZ, 1, fp) != 1)
- perror("Cannot read [new] map from file"), exit(1);
+ struct stat stbuf;
+ unicode wbuf[E_TABSZ];
+ unsigned char buf[E_TABSZ];
+ int parse_failed = 0;
+ int is_unicode;
+
+ if (fstat(fp->_fileno, &stbuf))
+ perror("Cannot stat map file"), exit(1);
+
+ /* first try a UTF screen-map: either ASCII (no restriction) or binary (regular file) */
+ if (!
+ (parse_failed =
+ (-1 == uni_screen_map_read_ascii(fp, wbuf, &is_unicode)))
+|| (S_ISREG(stbuf.st_mode) && (stbuf.st_size == (sizeof(unicode) * E_TABSZ)))) { /* test for binary UTF map by size */
+ if (parse_failed) {
+ if (-1 == fseek(fp, 0, SEEK_SET)) {
+ if (errno == ESPIPE)
+ fprintf(stderr,
+ "16bit screen-map MUST be a regular file.\n"),
+ exit(1);
+ else
+ perror("fseek failed reading binary 16bit screen-map"),
+ exit(1);
+ }
+
+ if (fread(wbuf, sizeof(unicode) * E_TABSZ, 1, fp) != 1)
+ perror("Cannot read [new] map from file"), exit(1);
#if 0
- else
- fprintf(stderr, "Input screen-map is binary.\n");
+ else
+ fprintf(stderr, "Input screen-map is binary.\n");
#endif
+ }
+
+ /* if it was effectively a 16-bit ASCII, OK, else try to read as 8-bit map */
+ /* same if it was binary, ie. if parse_failed */
+ if (parse_failed || is_unicode) {
+ if (ioctl(fd, PIO_UNISCRNMAP, wbuf))
+ perror("PIO_UNISCRNMAP ioctl"), exit(1);
+ else
+ return 0;
+ }
}
- /* if it was effectively a 16-bit ASCII, OK, else try to read as 8-bit map */
- /* same if it was binary, ie. if parse_failed */
- if (parse_failed || is_unicode)
- {
- if (ioctl(fd,PIO_UNISCRNMAP,wbuf))
- perror("PIO_UNISCRNMAP ioctl"), exit(1);
- else
- return 0;
+ /* rewind... */
+ if (-1 == fseek(fp, 0, SEEK_SET)) {
+ if (errno == ESPIPE)
+ fprintf(stderr,
+ "Assuming 8bit screen-map - MUST be a regular file.\n"),
+ exit(1);
+ else
+ perror("fseek failed assuming 8bit screen-map"), exit(1);
}
- }
-
- /* rewind... */
- if (-1 == fseek (fp, 0, SEEK_SET))
- {
- if (errno == ESPIPE)
- fprintf (stderr, "Assuming 8bit screen-map - MUST be a regular file.\n"), exit (1);
- else
- perror ("fseek failed assuming 8bit screen-map"), exit (1);
- }
-
- /* ... and try an old 8-bit screen-map */
- if (!(parse_failed = (-1 == old_screen_map_read_ascii(fp,buf))) ||
- (S_ISREG(stbuf.st_mode) &&
- (stbuf.st_size == E_TABSZ))) /* test for binary old 8-bit map by size */
- {
- if (parse_failed)
- {
- if (-1 == fseek (fp, 0, SEEK_SET))
- {
- if (errno == ESPIPE)
- /* should not - it succedeed above */
- fprintf (stderr, "fseek() returned ESPIPE !\n"), exit (1);
- else
- perror ("fseek for binary 8bit screen-map"), exit (1);
- }
-
- if (fread(buf,E_TABSZ,1,fp) != 1)
- perror("Cannot read [old] map from file"), exit(1);
+
+ /* ... and try an old 8-bit screen-map */
+ if (!(parse_failed = (-1 == old_screen_map_read_ascii(fp, buf))) ||
+ (S_ISREG(stbuf.st_mode) && (stbuf.st_size == E_TABSZ))) { /* test for binary old 8-bit map by size */
+ if (parse_failed) {
+ if (-1 == fseek(fp, 0, SEEK_SET)) {
+ if (errno == ESPIPE)
+ /* should not - it succedeed above */
+ fprintf(stderr, "fseek() returned ESPIPE !\n"),
+ exit(1);
+ else
+ perror("fseek for binary 8bit screen-map"), exit(1);
+ }
+
+ if (fread(buf, E_TABSZ, 1, fp) != 1)
+ perror("Cannot read [old] map from file"), exit(1);
#if 0
- else
- fprintf(stderr, "Input screen-map is binary.\n");
+ else
+ fprintf(stderr, "Input screen-map is binary.\n");
#endif
+ }
+
+ if (ioctl(fd, PIO_SCRNMAP, buf))
+ perror("PIO_SCRNMAP ioctl"), exit(1);
+ else
+ return 0;
}
-
- if (ioctl(fd,PIO_SCRNMAP,buf))
- perror("PIO_SCRNMAP ioctl"), exit(1);
- else
- return 0;
- }
- else
- {
- fprintf(stderr, "Error parsing symbolic map\n");
- exit(1);
- }
+ fprintf(stderr, "Error parsing symbolic map\n");
+ return(1);
}
*
* FIXME: ignores everything after second word
*/
-int uni_screen_map_read_ascii(FILE *fp, unicode buf[], int *is_unicode)
+int uni_screen_map_read_ascii(FILE * fp, unicode buf[], int *is_unicode)
{
- char buffer[256]; /* line buffer reading file */
- char *p, *q; /* 1st + 2nd words in line */
- int in, on; /* the same, as numbers */
- int tmp_is_unicode; /* tmp for is_unicode calculation */
- int i; /* loop index - result holder */
- int ret_code = 0; /* return code */
- sigset_t sigset, old_sigset;
-
- assert (is_unicode);
-
- *is_unicode = 0;
-
- /* first 128 codes defaults to ASCII */
- for (i=0; i<128; i++) buf[i] = i;
- /* remaining defaults to replacement char (usually E_TABSZ = 256) */
- for ( ; i<E_TABSZ; i++) buf[i] = 0xfffd;
-
- /* block SIGCHLD */
- sigemptyset (&sigset);
- sigaddset (&sigset, SIGCHLD);
- sigprocmask (SIG_BLOCK, &sigset, &old_sigset);
-
- do
- {
- if (NULL == fgets(buffer, sizeof(buffer),fp))
- {
- if (feof (fp))
- break;
- else
- {
- perror ("uni_screen_map_read_ascii() can't read line");
- exit (2);
- }
+ char buffer[256]; /* line buffer reading file */
+ char *p, *q; /* 1st + 2nd words in line */
+ int in, on; /* the same, as numbers */
+ int tmp_is_unicode; /* tmp for is_unicode calculation */
+ int i; /* loop index - result holder */
+ int ret_code = 0; /* return code */
+ sigset_t sigset, old_sigset;
+
+ assert(is_unicode);
+
+ *is_unicode = 0;
+
+ /* first 128 codes defaults to ASCII */
+ for (i = 0; i < 128; i++)
+ buf[i] = i;
+ /* remaining defaults to replacement char (usually E_TABSZ = 256) */
+ for (; i < E_TABSZ; i++)
+ buf[i] = 0xfffd;
+
+ /* block SIGCHLD */
+ sigemptyset(&sigset);
+ sigaddset(&sigset, SIGCHLD);
+ sigprocmask(SIG_BLOCK, &sigset, &old_sigset);
+
+ do {
+ if (NULL == fgets(buffer, sizeof(buffer), fp)) {
+ if (feof(fp))
+ break;
+ else {
+ perror("uni_screen_map_read_ascii() can't read line");
+ exit(2);
+ }
+ }
+
+ /* get "charset-relative charcode", stripping leading spaces */
+ p = strtok(buffer, " \t\n");
+
+ /* skip empty lines and comments */
+ if (!p || *p == '#')
+ continue;
+
+ /* get unicode mapping */
+ q = strtok(NULL, " \t\n");
+ if (q) {
+ in = ctoi(p, NULL);
+ if (in < 0 || in > 255) {
+ ret_code = -1;
+ break;
+ }
+
+ on = ctoi(q, &tmp_is_unicode);
+ if (in < 0 && on > 65535) {
+ ret_code = -1;
+ break;
+ }
+
+ *is_unicode |= tmp_is_unicode;
+ buf[in] = on;
+ } else {
+ ret_code = -1;
+ break;
+ }
}
-
- /* get "charset-relative charcode", stripping leading spaces */
- p = strtok(buffer," \t\n");
-
- /* skip empty lines and comments */
- if (!p || *p == '#')
- continue;
-
- /* get unicode mapping */
- q = strtok(NULL," \t\n");
- if (q)
- {
- in = ctoi(p, NULL);
- if (in < 0 || in > 255)
- {
- ret_code = -1;
- break;
- }
-
- on = ctoi(q, &tmp_is_unicode);
- if (in < 0 && on > 65535)
- {
- ret_code = -1;
- break;
- }
-
- *is_unicode |= tmp_is_unicode;
- buf[in] = on;
- }
- else
- {
- ret_code = -1;
- break;
- }
- }
- while (1); /* terminated by break on feof() */
+ while (1); /* terminated by break on feof() */
- /* restore sig mask */
- sigprocmask (SIG_SETMASK, &old_sigset, NULL);
+ /* restore sig mask */
+ sigprocmask(SIG_SETMASK, &old_sigset, NULL);
- return ret_code;
+ return ret_code;
}
-int old_screen_map_read_ascii(FILE *fp, unsigned char buf[])
+int old_screen_map_read_ascii(FILE * fp, unsigned char buf[])
{
- char buffer[256];
- int in, on;
- char *p, *q;
-
- for (in=0; in<256; in++) buf[in]=in;
-
- while (fgets(buffer,sizeof(buffer)-1,fp))
- {
- p = strtok(buffer," \t\n");
-
- if (!p || *p == '#')
- continue;
-
- q = strtok(NULL," \t\n#");
- if (q)
- {
- in = ctoi(p, NULL);
- if (in < 0 || in > 255) return -1;
-
- on = ctoi(q, NULL);
- if (in < 0 && on > 255) return -1;
-
- buf[in] = on;
+ char buffer[256];
+ int in, on;
+ char *p, *q;
+
+ for (in = 0; in < 256; in++)
+ buf[in] = in;
+
+ while (fgets(buffer, sizeof(buffer) - 1, fp)) {
+ p = strtok(buffer, " \t\n");
+
+ if (!p || *p == '#')
+ continue;
+
+ q = strtok(NULL, " \t\n#");
+ if (q) {
+ in = ctoi(p, NULL);
+ if (in < 0 || in > 255)
+ return -1;
+
+ on = ctoi(q, NULL);
+ if (in < 0 && on > 255)
+ return -1;
+
+ buf[in] = on;
+ } else
+ return -1;
}
- else return -1;
- }
-
- return(0);
+
+ return (0);
}
*
* CAVEAT: will report valid UTF mappings using only 1 byte as 8-bit ones.
*/
-long int ctoi(unsigned char *s, int *is_unicode)
+long int ctoi(unsigned char *s, int *is_unicode)
{
- int i;
- size_t ls;
-
- ls = strlen(s);
- if (is_unicode) *is_unicode = 0;
-
- /* hex-specified UCS2 */
- if ((strncmp(s,"U+",2) == 0) &&
- (strspn(s+2,"0123456789abcdefABCDEF") == ls-2))
- {
- sscanf(s+2,"%x",&i);
- if (is_unicode) *is_unicode = 1;
- }
-
- /* hex-specified byte */
- else if ((ls <= 4) && (strncmp(s,"0x",2) == 0) &&
- (strspn(s+2,"0123456789abcdefABCDEF") == ls-2))
- sscanf(s+2,"%x",&i);
-
- /* oct-specified number (byte) */
- else if ((*s == '0') &&
- (strspn(s,"01234567") == ls))
- sscanf(s,"%o",&i);
-
- /* dec-specified number (byte) */
- else if (strspn(s,"0123456789") == ls)
- sscanf(s,"%d",&i);
-
- /* single-byte quoted char */
- else if ((strlen(s) == 3) && (s[0] == '\'') && (s[2] == '\''))
- i=s[1];
-
- /* multi-byte UTF8 quoted char */
- else if ((s[0] == '\'') && (s[ls-1] == '\''))
- {
- s[ls-1] = 0; /* ensure we'll not "parse UTF too far" */
- i = utf8_to_ucs2(s+1);
- if (is_unicode) *is_unicode = 1;
- }
- else
- return(-1);
-
- return(i);
+ int i;
+ size_t ls;
+
+ ls = strlen(s);
+ if (is_unicode)
+ *is_unicode = 0;
+
+ /* hex-specified UCS2 */
+ if ((strncmp(s, "U+", 2) == 0) &&
+ (strspn(s + 2, "0123456789abcdefABCDEF") == ls - 2)) {
+ sscanf(s + 2, "%x", &i);
+ if (is_unicode)
+ *is_unicode = 1;
+ }
+
+ /* hex-specified byte */
+ else if ((ls <= 4) && (strncmp(s, "0x", 2) == 0) &&
+ (strspn(s + 2, "0123456789abcdefABCDEF") == ls - 2))
+ sscanf(s + 2, "%x", &i);
+
+ /* oct-specified number (byte) */
+ else if ((*s == '0') && (strspn(s, "01234567") == ls))
+ sscanf(s, "%o", &i);
+
+ /* dec-specified number (byte) */
+ else if (strspn(s, "0123456789") == ls)
+ sscanf(s, "%d", &i);
+
+ /* single-byte quoted char */
+ else if ((strlen(s) == 3) && (s[0] == '\'') && (s[2] == '\''))
+ i = s[1];
+
+ /* multi-byte UTF8 quoted char */
+ else if ((s[0] == '\'') && (s[ls - 1] == '\'')) {
+ s[ls - 1] = 0; /* ensure we'll not "parse UTF too far" */
+ i = utf8_to_ucs2(s + 1);
+ if (is_unicode)
+ *is_unicode = 1;
+ } else
+ return (-1);
+
+ return (i);
}
-void saveoldmap(int fd, char *omfil)
+void saveoldmap(int fd, char *omfil)
{
- FILE *fp;
- char buf[E_TABSZ];
+ FILE *fp;
+ char buf[E_TABSZ];
+
#ifdef GIO_UNISCRNMAP
- unicode xbuf[E_TABSZ];
- int is_old_map = 0;
+ unicode xbuf[E_TABSZ];
+ int is_old_map = 0;
- if (ioctl(fd,GIO_UNISCRNMAP,xbuf))
- {
- perror("GIO_UNISCRNMAP ioctl error");
+ if (ioctl(fd, GIO_UNISCRNMAP, xbuf)) {
+ perror("GIO_UNISCRNMAP ioctl error");
#endif
- if (ioctl(fd,GIO_SCRNMAP,buf))
- {
- perror("GIO_SCRNMAP ioctl error");
- exit(1);
- }
- else
- is_old_map = 1;
+ if (ioctl(fd, GIO_SCRNMAP, buf)) {
+ perror("GIO_SCRNMAP ioctl error");
+ exit(1);
+ } else
+ is_old_map = 1;
#ifdef GIO_UNISCRNMAP
- }
+ }
#endif
-
- if ((fp = fopen(omfil, "w")) == NULL)
- {
- perror(omfil);
- exit(1);
- }
+ if ((fp = fopen(omfil, "w")) == NULL) {
+ perror(omfil);
+ exit(1);
+ }
#ifdef GIO_UNISCRNMAP
- if (is_old_map)
- {
+ if (is_old_map) {
#endif
- if (fwrite(buf,E_TABSZ,1,fp) != 1)
- {
- perror("Error writing map to file");
- exit(1);
- }
+ if (fwrite(buf, E_TABSZ, 1, fp) != 1) {
+ perror("Error writing map to file");
+ exit(1);
+ }
#ifdef GIO_UNISCRNMAP
- }
- else
- if (fwrite(xbuf, sizeof(unicode) * E_TABSZ,1,fp) != 1)
- {
- perror("Error writing map to file");
- exit(1);
+ } else if (fwrite(xbuf, sizeof(unicode) * E_TABSZ, 1, fp) != 1) {
+ perror("Error writing map to file");
+ exit(1);
}
#endif
-
- fclose(fp);
+
+ fclose(fp);
}
-unicode utf8_to_ucs2 (char* buf)
+unicode utf8_to_ucs2(char *buf)
{
- int utf_count = 0;
- long utf_char;
- unicode tc;
- unsigned char c;
-
- do
- {
- c = *buf;
- buf++;
-
- /* if byte should be part of multi-byte sequence */
- if(c & 0x80)
- {
- /* if we have already started to parse a UTF8 sequence */
- if (utf_count > 0 && (c & 0xc0) == 0x80)
- {
- utf_char = (utf_char << 6) | (c & 0x3f);
- utf_count--;
- if (utf_count == 0)
- tc = utf_char;
- else
- continue;
- }
- else /* Possibly 1st char of a UTF8 sequence */
- {
- if ((c & 0xe0) == 0xc0)
- {
- utf_count = 1;
- utf_char = (c & 0x1f);
- }
- else if ((c & 0xf0) == 0xe0)
- {
- utf_count = 2;
- utf_char = (c & 0x0f);
- }
- else if ((c & 0xf8) == 0xf0)
- {
- utf_count = 3;
- utf_char = (c & 0x07);
- }
- else if ((c & 0xfc) == 0xf8)
- {
- utf_count = 4;
- utf_char = (c & 0x03);
- }
- else if ((c & 0xfe) == 0xfc)
- {
- utf_count = 5;
- utf_char = (c & 0x01);
- }
- else
- utf_count = 0;
- continue;
- }
- }
- else /* not part of multi-byte sequence - treat as ASCII
- * this makes incomplete sequences to be ignored
- */
- {
- tc = c;
- utf_count = 0;
- }
- }
- while (utf_count);
-
- return tc;
-}
+ int utf_count = 0;
+ long utf_char = 0;
+ unicode tc = 0;
+ unsigned char c;
+
+ do {
+ c = *buf;
+ buf++;
+
+ /* if byte should be part of multi-byte sequence */
+ if (c & 0x80) {
+ /* if we have already started to parse a UTF8 sequence */
+ if (utf_count > 0 && (c & 0xc0) == 0x80) {
+ utf_char = (utf_char << 6) | (c & 0x3f);
+ utf_count--;
+ if (utf_count == 0)
+ tc = utf_char;
+ else
+ continue;
+ } else { /* Possibly 1st char of a UTF8 sequence */
+
+ if ((c & 0xe0) == 0xc0) {
+ utf_count = 1;
+ utf_char = (c & 0x1f);
+ } else if ((c & 0xf0) == 0xe0) {
+ utf_count = 2;
+ utf_char = (c & 0x0f);
+ } else if ((c & 0xf8) == 0xf0) {
+ utf_count = 3;
+ utf_char = (c & 0x07);
+ } else if ((c & 0xfc) == 0xf8) {
+ utf_count = 4;
+ utf_char = (c & 0x03);
+ } else if ((c & 0xfe) == 0xfc) {
+ utf_count = 5;
+ utf_char = (c & 0x01);
+ } else
+ utf_count = 0;
+ continue;
+ }
+ } else { /* not part of multi-byte sequence - treat as ASCII
+ * this makes incomplete sequences to be ignored
+ */
+ tc = c;
+ utf_count = 0;
+ }
+ }
+ while (utf_count);
+ return tc;
+}
projects / oweals / busybox.git / blobdiff