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Diffstat (limited to 'Build/source/utils/t1utils/t1utils-1.34/t1lib.c')
-rw-r--r--Build/source/utils/t1utils/t1utils-1.34/t1lib.c441
1 files changed, 441 insertions, 0 deletions
diff --git a/Build/source/utils/t1utils/t1utils-1.34/t1lib.c b/Build/source/utils/t1utils/t1utils-1.34/t1lib.c
new file mode 100644
index 00000000000..d7b82a9f208
--- /dev/null
+++ b/Build/source/utils/t1utils/t1utils-1.34/t1lib.c
@@ -0,0 +1,441 @@
+/* t1lib
+ *
+ * This file contains functions for reading PFA and PFB files.
+ *
+ * (C) 1999-2008 Eddie Kohler <ekohler@gmail.com>, after code by
+ * I. Lee Hetherington <ilh@lcs.mit.edu>. All rights reserved.
+ *
+ * Permission is hereby granted to use, modify, and distribute this program
+ * for any purpose provided this copyright notice remains intact.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include "t1lib.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PFA_ASCII 1
+#define PFA_EEXEC_TEST 2
+#define PFA_HEX 3
+#define PFA_BINARY 4
+
+/* This function returns the value (0-15) of a single hex digit. It returns
+ 0 for an invalid hex digit. */
+
+static int
+hexval(char c)
+{
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+ else if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ else if (c >= '0' && c <= '9')
+ return c - '0';
+ else
+ return 0;
+}
+
+/* This function translates a string of hexadecimal digits into binary data.
+ We allow an odd number of digits. Returns length of binary data. */
+
+static int
+translate_hex_string(char *s, char *saved_orphan)
+{
+ int c1 = *saved_orphan;
+ char *start = s;
+ char *t = s;
+ for (; *s; s++) {
+ if (isspace(*s))
+ continue;
+ if (c1) {
+ *t++ = (hexval(c1) << 4) + hexval(*s);
+ c1 = 0;
+ } else
+ c1 = *s;
+ }
+ *saved_orphan = c1;
+ return t - start;
+}
+
+/* This function returns 1 if the string contains all '0's. */
+
+static int
+all_zeroes(char *s)
+{
+ if (*s == '\0' || *s == '\n')
+ return 0;
+ while (*s == '0')
+ s++;
+ return *s == '\0' || *s == '\n';
+}
+
+/* This function handles the entire file. */
+
+#define LINESIZE 1024
+
+void
+process_pfa(FILE *ifp, const char *ifp_filename, struct font_reader *fr)
+{
+ /* Loop until no more input. We need to look for `currentfile eexec' to
+ start eexec section (hex to binary conversion) and line of all zeros to
+ switch back to ASCII. */
+
+ /* Don't use fgets() in case line-endings are indicated by bare \r's, as
+ occurs in Macintosh fonts. */
+
+ /* 2.Aug.1999 - At the behest of Tom Kacvinsky <tjk@ams.org>, support
+ binary PFA fonts. */
+
+ char buffer[LINESIZE];
+ int c = 0;
+ int blocktyp = PFA_ASCII;
+ char saved_orphan = 0;
+ (void)ifp_filename;
+
+ while (c != EOF) {
+ char *line = buffer, *last = buffer;
+ int crlf = 0;
+ c = getc(ifp);
+ while (c != EOF && c != '\r' && c != '\n' && last < buffer + LINESIZE - 1) {
+ *last++ = c;
+ c = getc(ifp);
+ }
+
+ /* handle the end of the line */
+ if (last == buffer + LINESIZE - 1)
+ /* buffer overrun: don't append newline even if we have it */
+ ungetc(c, ifp);
+ else if (c == '\r' && blocktyp != PFA_BINARY) {
+ /* change CR or CR/LF into LF, unless reading binary data! (This
+ condition was wrong before, caused Thanh problems -
+ 6.Mar.2001) */
+ c = getc(ifp);
+ if (c != '\n')
+ ungetc(c, ifp), crlf = 1;
+ else
+ crlf = 2;
+ *last++ = '\n';
+ } else if (c != EOF)
+ *last++ = c;
+
+ *last = 0;
+
+ /* now that we have the line, handle it */
+ if (blocktyp == PFA_ASCII) {
+ if (strncmp(line, "currentfile eexec", 17) == 0 && isspace(line[17])) {
+ char saved_p;
+ /* assert(line == buffer); */
+ for (line += 18; isspace(*line); line++)
+ /* nada */;
+ saved_p = *line;
+ *line = 0;
+ fr->output_ascii(buffer, line - buffer);
+ *line = saved_p;
+ blocktyp = PFA_EEXEC_TEST;
+ if (!*line)
+ continue;
+ } else {
+ fr->output_ascii(line, last - line);
+ continue;
+ }
+ }
+
+ /* check immediately after "currentfile eexec" for ASCII or binary */
+ if (blocktyp == PFA_EEXEC_TEST) {
+ /* 8.Feb.2004: fix bug if first character in a binary eexec block
+ is 0, reported by Werner Lemberg */
+ for (; line < last && isspace(*line); line++)
+ /* nada */;
+ if (line == last)
+ continue;
+ else if (last >= line + 4 && isxdigit(line[0]) && isxdigit(line[1])
+ && isxdigit(line[2]) && isxdigit(line[3]))
+ blocktyp = PFA_HEX;
+ else
+ blocktyp = PFA_BINARY;
+ memmove(buffer, line, last - line + 1);
+ last = buffer + (last - line);
+ line = buffer;
+ /* patch up crlf fix */
+ if (blocktyp == PFA_BINARY && crlf) {
+ last[-1] = '\r';
+ if (crlf == 2)
+ *last++ = '\n';
+ }
+ }
+
+ /* blocktyp == PFA_HEX || blocktyp == PFA_BINARY */
+ if (all_zeroes(line)) { /* XXX not safe */
+ fr->output_ascii(line, last - line);
+ blocktyp = PFA_ASCII;
+ } else if (blocktyp == PFA_HEX) {
+ int len = translate_hex_string(line, &saved_orphan);
+ if (len)
+ fr->output_binary((unsigned char *)line, len);
+ } else
+ fr->output_binary((unsigned char *)line, last - line);
+ }
+
+ fr->output_end();
+}
+
+/* Process a PFB file. */
+
+/* XXX Doesn't handle "currentfile eexec" as intelligently as process_pfa
+ does. */
+
+static int
+handle_pfb_ascii(struct font_reader *fr, char *line, int len)
+{
+ /* Divide PFB_ASCII blocks into lines */
+ int start = 0;
+
+ while (1) {
+ int pos = start;
+
+ while (pos < len && line[pos] != '\n' && line[pos] != '\r')
+ pos++;
+
+ if (pos >= len) {
+ if (pos == start)
+ return 0;
+ else if (start == 0 && pos == LINESIZE - 1) {
+ line[pos] = 0;
+ fr->output_ascii(line, pos);
+ return 0;
+ } else {
+ memmove(line, line + start, pos - start);
+ return pos - start;
+ }
+
+ } else if (pos < len - 1 && line[pos] == '\r' && line[pos+1] == '\n') {
+ line[pos] = '\n';
+ line[pos+1] = 0;
+ fr->output_ascii(line + start, pos + 1 - start);
+ start = pos + 2;
+
+ } else {
+ char save = line[pos+1];
+ line[pos] = '\n';
+ line[pos+1] = 0;
+ fr->output_ascii(line + start, pos + 1 - start);
+ line[pos+1] = save;
+ start = pos + 1;
+ }
+ }
+}
+
+
+void
+process_pfb(FILE *ifp, const char *ifp_filename, struct font_reader *fr)
+{
+ int blocktyp = 0;
+ int block_len = 0;
+ int c = 0;
+ int filepos = 0;
+ int linepos = 0;
+ char line[LINESIZE];
+
+ while (1) {
+ while (block_len == 0) {
+ c = getc(ifp);
+ blocktyp = getc(ifp);
+ if (c != PFB_MARKER
+ || (blocktyp != PFB_ASCII && blocktyp != PFB_BINARY
+ && blocktyp != PFB_DONE)) {
+ if (c == EOF || blocktyp == EOF)
+ error("%s corrupted: no end-of-file marker", ifp_filename);
+ else
+ error("%s corrupted: bad block marker at position %d",
+ ifp_filename, filepos);
+ blocktyp = PFB_DONE;
+ }
+ if (blocktyp == PFB_DONE)
+ goto done;
+
+ block_len = getc(ifp) & 0xFF;
+ block_len |= (getc(ifp) & 0xFF) << 8;
+ block_len |= (getc(ifp) & 0xFF) << 16;
+ block_len |= (getc(ifp) & 0xFF) << 24;
+ if (feof(ifp)) {
+ error("%s corrupted: bad block length at position %d",
+ ifp_filename, filepos);
+ blocktyp = PFB_DONE;
+ goto done;
+ }
+ filepos += 6;
+ }
+
+ /* read the block in its entirety, in LINESIZE chunks */
+ while (block_len > 0) {
+ int rest = LINESIZE - 1 - linepos; /* leave space for '\0' */
+ int n = (block_len > rest ? rest : block_len);
+ int actual = fread(line + linepos, 1, n, ifp);
+ if (actual != n) {
+ error("%s corrupted: block short by %d bytes at position %d",
+ ifp_filename, block_len - actual, filepos);
+ block_len = actual;
+ }
+
+ if (blocktyp == PFB_BINARY)
+ fr->output_binary((unsigned char *)line, actual);
+ else
+ linepos = handle_pfb_ascii(fr, line, linepos + actual);
+
+ block_len -= actual;
+ filepos += actual;
+ }
+
+ /* handle any leftover line */
+ if (linepos > 0) {
+ line[linepos] = 0;
+ fr->output_ascii(line, linepos);
+ linepos = 0;
+ }
+ }
+
+ done:
+ c = getc(ifp);
+ if (c != EOF)
+ error("%s corrupted: data after PFB end marker at position %d",
+ ifp_filename, filepos - 2);
+ fr->output_end();
+}
+
+
+#define DEFAULT_BLOCKLEN (1L<<12)
+
+void
+init_pfb_writer(struct pfb_writer *w, int blocklen, FILE *f)
+{
+ w->len = DEFAULT_BLOCKLEN;
+ w->buf = (unsigned char *)malloc(w->len);
+ if (!w->buf)
+ fatal_error("out of memory");
+ w->max_len = (blocklen <= 0 ? 0xFFFFFFFFU : (unsigned)blocklen);
+ w->pos = 0;
+ w->blocktyp = PFB_ASCII;
+ w->binary_blocks_written = 0;
+ w->f = f;
+}
+
+void
+pfb_writer_output_block(struct pfb_writer *w)
+{
+ /* do nothing if nothing in block */
+ if (w->pos == 0)
+ return;
+
+ /* output four-byte block length */
+ putc(PFB_MARKER, w->f);
+ putc(w->blocktyp, w->f);
+ putc((int)(w->pos & 0xff), w->f);
+ putc((int)((w->pos >> 8) & 0xff), w->f);
+ putc((int)((w->pos >> 16) & 0xff), w->f);
+ putc((int)((w->pos >> 24) & 0xff), w->f);
+
+ /* output block data */
+ fwrite(w->buf, 1, w->pos, w->f);
+
+ /* mark block buffer empty and uninitialized */
+ w->pos = 0;
+ if (w->blocktyp == PFB_BINARY)
+ w->binary_blocks_written++;
+}
+
+void
+pfb_writer_grow_buf(struct pfb_writer *w)
+{
+ if (w->len < w->max_len) {
+ /* grow w->buf */
+ unsigned new_len = w->len * 2;
+ unsigned char *new_buf;
+ if (new_len > w->max_len)
+ new_len = w->max_len;
+ new_buf = (unsigned char *)malloc(new_len);
+ if (!new_buf) {
+ error("out of memory; continuing with a smaller block size");
+ w->max_len = w->len;
+ pfb_writer_output_block(w);
+ } else {
+ memcpy(new_buf, w->buf, w->len);
+ free(w->buf);
+ w->buf = new_buf;
+ w->len = new_len;
+ }
+
+ } else
+ /* buf already the right size, just output the block */
+ pfb_writer_output_block(w);
+}
+
+void
+pfb_writer_end(struct pfb_writer *w)
+{
+ if (w->pos)
+ pfb_writer_output_block(w);
+ putc(PFB_MARKER, w->f);
+ putc(PFB_DONE, w->f);
+}
+
+/* This CRC table and routine were borrowed from macutils-2.0b3 */
+
+static unsigned short crctab[256] = {
+ 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
+ 0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
+ 0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
+ 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
+ 0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
+ 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
+ 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
+ 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
+ 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
+ 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
+ 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
+ 0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
+ 0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
+ 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
+ 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
+ 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
+ 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
+ 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
+ 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
+ 0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
+ 0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
+ 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+ 0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
+ 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
+ 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
+ 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
+ 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
+ 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
+ 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
+ 0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
+ 0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
+ 0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0,
+};
+
+/*
+ * Update a CRC check on the given buffer.
+ */
+
+int
+crcbuf(int crc, unsigned int len, const char *buf)
+{
+ const unsigned char *ubuf = (const unsigned char *)buf;
+ while (len--)
+ crc = ((crc << 8) & 0xFF00) ^ crctab[((crc >> 8) & 0xFF) ^ *ubuf++];
+ return crc;
+}
+
+#ifdef __cplusplus
+}
+#endif
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