1 /* $OpenBSD: ex_abbrev.c,v 1.9 2016/05/27 09:18:12 martijn Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 1992, 1993, 1994, 1995, 1996 7 * Keith Bostic. All rights reserved. 8 * 9 * See the LICENSE file for redistribution information. 10 */ 11 12 #include "config.h" 13 14 #include <sys/types.h> 15 #include <sys/queue.h> 16 #include <sys/time.h> 17 18 #include <bitstring.h> 19 #include <ctype.h> 20 #include <limits.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include <string.h> 24 25 #include "../common/common.h" 26 #include "../vi/vi.h" 27 28 /* 29 * ex_abbr -- :abbreviate [key replacement] 30 * Create an abbreviation or display abbreviations. 31 * 32 * PUBLIC: int ex_abbr(SCR *, EXCMD *); 33 */ 34 int 35 ex_abbr(SCR *sp, EXCMD *cmdp) 36 { 37 CHAR_T *p; 38 size_t len; 39 40 switch (cmdp->argc) { 41 case 0: 42 if (seq_dump(sp, SEQ_ABBREV, 0) == 0) 43 msgq(sp, M_INFO, "No abbreviations to display"); 44 return (0); 45 case 2: 46 break; 47 default: 48 abort(); 49 } 50 51 /* 52 * Check for illegal characters. 53 * 54 * !!! 55 * Another fun one, historically. See vi/v_ntext.c:txt_abbrev() for 56 * details. The bottom line is that all abbreviations have to end 57 * with a "word" character, because it's the transition from word to 58 * non-word characters that triggers the test for an abbreviation. In 59 * addition, because of the way the test is done, there can't be any 60 * transitions from word to non-word character (or vice-versa) other 61 * than between the next-to-last and last characters of the string, 62 * and there can't be any <blank> characters. Warn the user. 63 */ 64 if (!inword(cmdp->argv[0]->bp[cmdp->argv[0]->len - 1])) { 65 msgq(sp, M_ERR, 66 "Abbreviations must end with a \"word\" character"); 67 return (1); 68 } 69 for (p = cmdp->argv[0]->bp; *p != '\0'; ++p) 70 if (isblank(p[0])) { 71 msgq(sp, M_ERR, 72 "Abbreviations may not contain tabs or spaces"); 73 return (1); 74 } 75 if (cmdp->argv[0]->len > 2) 76 for (p = cmdp->argv[0]->bp, 77 len = cmdp->argv[0]->len - 2; len; --len, ++p) 78 if (inword(p[0]) != inword(p[1])) { 79 msgq(sp, M_ERR, 80 "Abbreviations may not mix word/non-word characters, except at the end"); 81 return (1); 82 } 83 84 if (seq_set(sp, NULL, 0, cmdp->argv[0]->bp, cmdp->argv[0]->len, 85 cmdp->argv[1]->bp, cmdp->argv[1]->len, SEQ_ABBREV, SEQ_USERDEF)) 86 return (1); 87 88 F_SET(sp->gp, G_ABBREV); 89 return (0); 90 } 91 92 /* 93 * ex_unabbr -- :unabbreviate key 94 * Delete an abbreviation. 95 * 96 * PUBLIC: int ex_unabbr(SCR *, EXCMD *); 97 */ 98 int 99 ex_unabbr(SCR *sp, EXCMD *cmdp) 100 { 101 ARGS *ap; 102 103 ap = cmdp->argv[0]; 104 if (!F_ISSET(sp->gp, G_ABBREV) || 105 seq_delete(sp, ap->bp, ap->len, SEQ_ABBREV)) { 106 msgq_str(sp, M_ERR, ap->bp, 107 "\"%s\" is not an abbreviation"); 108 return (1); 109 } 110 return (0); 111 } 112