/*- * Copyright (c) 1992, 1993, 1994 * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. */ #ifndef lint static char sccsid[] = "@(#)ex_digraph.c 8.5 (Berkeley) 3/8/94"; #endif /* not lint */ #ifndef NO_DIGRAPH #include #include #include #include #include #include #include #include #include #include #include #include "compat.h" #include #include #include "vi.h" #include "excmd.h" static void do_digraph __P((SCR *, EXF *, int, u_char *)); /* This stuff is used to build the default digraphs table. */ static u_char digtable[][4] = { # ifdef CS_IBMPC "C,\200", "u\"\1", "e'\2", "a^\3", "a\"\4", "a`\5", "a@\6", "c,\7", "e^\10", "e\"\211", "e`\12", "i\"\13", "i^\14", "i`\15", "A\"\16", "A@\17", "E'\20", "ae\21", "AE\22", "o^\23", "o\"\24", "o`\25", "u^\26", "u`\27", "y\"\30", "O\"\31", "U\"\32", "a'\240", "i'!", "o'\"", "u'#", "n~$", "N~%", "a-&", "o-'", "~?(", "~!-", "\"<.", "\">/", # ifdef CS_SPECIAL "2/+", "4/,", "^+;", "^q<", "^c=", "^r>", "^t?", "pp]", "^^^", "oo_", "*a`", "*ba", "*pc", "*Sd", "*se", "*uf", "*tg", "*Ph", "*Ti", "*Oj", "*dk", "*Hl", "*hm", "*En", "*No", "eqp", "pmq", "ger", "les", "*It", "*iu", "*/v", "*=w", "sq{", "^n|", "^2}", "^3~", "^_\377", # endif /* CS_SPECIAL */ # endif /* CS_IBMPC */ # ifdef CS_LATIN1 "~!!", "a-*", "\">+", "o-:", "\"<>", "~??", "A`@", "A'A", "A^B", "A~C", "A\"D", "A@E", "AEF", "C,G", "E`H", "E'I", "E^J", "E\"K", "I`L", "I'M", "I^N", "I\"O", "-DP", "N~Q", "O`R", "O'S", "O^T", "O~U", "O\"V", "O/X", "U`Y", "U'Z", "U^[", "U\"\\", "Y'_", "a``", "a'a", "a^b", "a~c", "a\"d", "a@e", "aef", "c,g", "e`h", "e'i", "e^j", "e\"k", "i`l", "i'm", "i^n", "i\"o", "-dp", "n~q", "o`r", "o's", "o^t", "o~u", "o\"v", "o/x", "u`y", "u'z", "u^{", "u\"|", "y'~", # endif /* CS_LATIN1 */ "" }; int digraph_init(sp) SCR *sp; { int i; for (i = 0; *digtable[i]; i++) do_digraph(sp, NULL, 0, digtable[i]); do_digraph(sp, NULL, 0, NULL); return (0); } int ex_digraph(sp, ep, cmdp) SCR *sp; EXF *ep; EXCMDARG *cmdp; { do_digraph(sp, ep, F_ISSET(cmdp, E_FORCE), cmdp->argv[0]->bp); return (0); } static struct _DIG { struct _DIG *next; char key1; char key2; char dig; char save; } *digs; int digraph(sp, key1, key2) SCR *sp; char key1; /* the underlying character */ char key2; /* the second character */ { int new_key; register struct _DIG *dp; /* if digraphs are disabled, then just return the new char */ if (O_ISSET(sp, O_DIGRAPH)) { return key2; } /* remember the new key, so we can return it if this isn't a digraph */ new_key = key2; /* sort key1 and key2, so that their original order won't matter */ if (key1 > key2) { key2 = key1; key1 = new_key; } /* scan through the digraph chart */ for (dp = digs; dp && (dp->key1 != key1 || dp->key2 != key2); dp = dp->next) { } /* if this combination isn't in there, just use the new key */ if (!dp) { return new_key; } /* else use the digraph key */ return dp->dig; } /* this function lists or defines digraphs */ static void do_digraph(sp, ep, bang, extra) SCR *sp; EXF *ep; int bang; u_char *extra; { int dig; register struct _DIG *dp; struct _DIG *prev; static int user_defined = 0; /* boolean: are all later digraphs user-defined? */ char listbuf[8]; /* if "extra" is NULL, then we've reached the end of the built-ins */ if (!extra) { user_defined = 1; return; } /* if no args, then display the existing digraphs */ if (*extra < ' ') { listbuf[0] = listbuf[1] = listbuf[2] = listbuf[5] = ' '; listbuf[7] = '\0'; for (dig = 0, dp = digs; dp; dp = dp->next) { if (dp->save || bang) { dig += 7; if (dig >= sp->cno) { addch('\n'); refresh(); dig = 7; } listbuf[3] = dp->key1; listbuf[4] = dp->key2; listbuf[6] = dp->dig; addstr(listbuf); } } addch('\n'); refresh(); return; } /* make sure we have at least two characters */ if (!extra[1]) { msgq(sp, M_ERR, "Digraphs must be composed of two characters"); return; } /* sort key1 and key2, so that their original order won't matter */ if (extra[0] > extra[1]) { dig = extra[0]; extra[0] = extra[1]; extra[1] = dig; } /* locate the new digraph character */ for (dig = 2; extra[dig] == ' ' || extra[dig] == '\t'; dig++) { } dig = extra[dig]; if (!bang && dig) { dig |= 0x80; } /* search for the digraph */ for (prev = (struct _DIG *)0, dp = digs; dp && (dp->key1 != extra[0] || dp->key2 != extra[1]); prev = dp, dp = dp->next) { } /* deleting the digraph? */ if (!dig) { if (!dp) { #ifndef CRUNCH msgq(sp, M_ERR, "%c%c not a digraph", extra[0], extra[1]); #endif return; } if (prev) prev->next = dp->next; else digs = dp->next; free(dp); return; } /* if necessary, create a new digraph struct for the new digraph */ if (dig && !dp) { MALLOC(sp, dp, struct _DIG *, sizeof(struct _DIG)); if (dp == NULL) return; if (prev) prev->next = dp; else digs = dp; dp->next = (struct _DIG *)0; } /* assign it the new digraph value */ dp->key1 = extra[0]; dp->key2 = extra[1]; dp->dig = dig; dp->save = user_defined; } void digraph_save(sp, fd) SCR *sp; int fd; { static char buf[] = "digraph! XX Y\n"; register struct _DIG *dp; for (dp = digs; dp; dp = dp->next) { if (dp->save) { buf[9] = dp->key1; buf[10] = dp->key2; buf[12] = dp->dig; write(fd, buf, (unsigned)14); } } } #endif