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