projects / unix-history / blame
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| ad787160 C |
1 | /*- |
| 2 | * Copyright (c) 1992, 1993 | |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | * | |
| 33 | * @(#)excmd.h.stub 8.1 (Berkeley) 6/9/93 | |
| 34 | */ | |
| 35 | ||
| 36 | struct _excmdarg; | |
| 37 | ||
| 38 | /* Ex command structure. */ | |
| 39 | typedef struct _excmdlist { | |
| 40 | char *name; /* Command name. */ | |
| 41 | /* Underlying function. */ | |
| 42 | int (*fn) __P((SCR *, EXF *, struct _excmdarg *)); | |
| 43 | ||
| 44 | #define E_ADDR1 0x00001 /* One address. */ | |
| 45 | #define E_ADDR2 0x00002 /* Two address. */ | |
| 46 | #define E_ADDR2_ALL 0x00004 /* Zero/two addresses; zero == all. */ | |
| 47 | #define E_ADDR2_NONE 0x00008 /* Zero/two addresses; zero == none. */ | |
| 48 | #define E_FORCE 0x00010 /* ! */ | |
| 49 | ||
| 50 | #define E_F_CARAT 0x00020 /* ^ flag. */ | |
| 51 | #define E_F_DASH 0x00040 /* - flag. */ | |
| 52 | #define E_F_DOT 0x00080 /* . flag. */ | |
| 53 | #define E_F_HASH 0x00100 /* # flag. */ | |
| 54 | #define E_F_LIST 0x00200 /* l flag. */ | |
| 55 | #define E_F_PLUS 0x00400 /* + flag. */ | |
| 56 | #define E_F_PRINT 0x00800 /* p flag. */ | |
| 57 | #define E_F_MASK 0x00fe0 /* Flag mask. */ | |
| 58 | #define E_F_PRCLEAR 0x01000 /* Clear the print (#, l, p) flags. */ | |
| 59 | ||
| 60 | #define E_NOGLOBAL 0x02000 /* Not in a global. */ | |
| 61 | #define E_NOPERM 0x04000 /* Permission denied for now. */ | |
| 62 | #define E_NORC 0x08000 /* Not from a .exrc or EXINIT. */ | |
| 63 | #define E_SETLAST 0x10000 /* Reset last command. */ | |
| 64 | #define E_ZERO 0x20000 /* 0 is a legal addr1. */ | |
| 65 | #define E_ZERODEF 0x40000 /* 0 is default addr1 of empty files. */ | |
| 66 | u_int flags; | |
| 67 | char *syntax; /* Syntax script. */ | |
| 68 | char *usage; /* Usage line. */ | |
| 69 | } EXCMDLIST; | |
| 70 | extern EXCMDLIST cmds[]; /* List of ex commands. */ | |
| 71 | ||
| 72 | /* Structure passed around to functions implementing ex commands. */ | |
| 73 | typedef struct _excmdarg { | |
| 74 | EXCMDLIST *cmd; /* Command entry in command table. */ | |
| 75 | int addrcnt; /* Number of addresses (0, 1 or 2). */ | |
| 76 | MARK addr1; /* 1st address. */ | |
| 77 | MARK addr2; /* 2nd address. */ | |
| 78 | recno_t lineno; /* Line number. */ | |
| 79 | u_int flags; /* Selected flags from EXCMDLIST. */ | |
| 80 | int argc; /* Count of file/word arguments. */ | |
| 81 | char **argv; /* List of file/word arguments. */ | |
| 82 | char *command; /* Command line, if parse locally. */ | |
| 83 | char *plus; /* '+' command word. */ | |
| 84 | char *string; /* String. */ | |
| 85 | int buffer; /* Named buffer. */ | |
| 86 | } EXCMDARG; | |
| 87 | ||
| 88 | extern char *defcmdarg[2]; /* Default array. */ | |
| 89 | ||
| 90 | /* Macro to set up the structure. */ | |
| 91 | #define SETCMDARG(s, _cmd, _addrcnt, _lno1, _lno2, _force, _arg) { \ | |
| 92 | memset(&s, 0, sizeof(EXCMDARG)); \ | |
| 93 | s.cmd = &cmds[_cmd]; \ | |
| 94 | s.addrcnt = (_addrcnt); \ | |
| 95 | s.addr1.lno = (_lno1); \ | |
| 96 | s.addr2.lno = (_lno2); \ | |
| 97 | s.addr1.cno = s.addr2.cno = 1; \ | |
| 98 | if (_force) \ | |
| 99 | s.flags |= E_FORCE; \ | |
| 100 | s.argc = _arg ? 1 : 0; \ | |
| 101 | s.argv = defcmdarg; \ | |
| 102 | s.string = ""; \ | |
| 103 | defcmdarg[0] = _arg; \ | |
| 104 | } | |
| 105 | ||
| 106 | /* Control character. */ | |
| 107 | #define ctrl(ch) ((ch) & 0x1f) | |
| 108 | ||
| 109 | #define AUTOWRITE(sp, ep) { \ | |
| 110 | if (F_ISSET((ep), F_MODIFIED) && O_ISSET((sp), O_AUTOWRITE) && \ | |
| 111 | file_write((sp), (ep), NULL, NULL, NULL, FS_ALL)) \ | |
| 112 | return (1); \ | |
| 113 | } | |
| 114 | ||
| 115 | #define MODIFY_CHECK(sp, ep, force) { \ | |
| 116 | if (F_ISSET((ep), F_MODIFIED)) \ | |
| 117 | if (O_ISSET((sp), O_AUTOWRITE)) { \ | |
| 118 | if (file_write((sp), (ep), NULL, NULL, NULL, \ | |
| 119 | FS_ALL | force?FS_FORCE:0 | FS_POSSIBLE)) \ | |
| 120 | return (1); \ | |
| 121 | } else if (ep->refcnt <= 1 && !(force)) { \ | |
| 122 | msgq(sp, M_ERR, \ | |
| 123 | "Modified since last write; write or use ! to override."); \ | |
| 124 | return (1); \ | |
| 125 | } \ | |
| 126 | } | |
| 127 | ||
| 128 | #define MODIFY_WARN(sp, ep) { \ | |
| 129 | if (F_ISSET(ep, F_MODIFIED) && O_ISSET(sp, O_WARN)) \ | |
| 130 | (void)fprintf(sp->stdfp, \ | |
| 131 | "Modified since last write.\n"); \ | |
| 132 | } | |
| 133 | ||
| 134 | /* Ex function prototypes. */ | |
| 135 | int buildargv __P((SCR *, EXF *, char *, int, int *, char ***)); | |
| 136 | int esystem __P((SCR *, const u_char *, const u_char *)); | |
| 137 | int ex_run_process __P((SCR *, char *, size_t *, char *, size_t)); | |
| 138 | void set_altfname __P((SCR *, char *)); | |
| 139 | ||
| 140 | int ex __P((SCR *, EXF *)); | |
| 141 | int ex_cfile __P((SCR *, EXF *, char *, int)); | |
| 142 | int ex_cmd __P((SCR *, EXF *, char *)); | |
| 143 | int ex_cstring __P((SCR *, EXF *, char *, int)); | |
| 144 | int ex_end __P((SCR *)); | |
| 145 | int ex_gb __P((SCR *, EXF *, HDR *, int, u_int)); | |
| 146 | int ex_getline __P((SCR *, FILE *, size_t *)); | |
| 147 | int ex_init __P((SCR *, EXF *)); | |
| 148 | int ex_print __P((SCR *, EXF *, MARK *, MARK *, int)); | |
| 149 | int ex_readfp __P((SCR *, EXF *, char *, FILE *, MARK *, recno_t *)); | |
| 150 | int ex_suspend __P((SCR *)); | |
| 151 | int ex_writefp __P((SCR *, EXF *, char *, FILE *, MARK *, MARK *, int)); | |
| 152 | void ex_refresh __P((SCR *, EXF *)); | |
| 153 | ||
| 154 | #define EXPROTO(type, name) \ | |
| 155 | type name __P((SCR *, EXF *, EXCMDARG *)); | |
| 156 | ||
| 157 | EXPROTO(int, ex_abbr); | |
| 158 | EXPROTO(int, ex_append); | |
| 159 | EXPROTO(int, ex_args); | |
| 160 | EXPROTO(int, ex_at); | |
| 161 | EXPROTO(int, ex_bang); | |
| 162 | EXPROTO(int, ex_bdisplay); | |
| 163 | EXPROTO(int, ex_cc); | |
| 164 | EXPROTO(int, ex_cd); | |
| 165 | EXPROTO(int, ex_change); | |
| 166 | EXPROTO(int, ex_color); | |
| 167 | EXPROTO(int, ex_copy); | |
| 168 | EXPROTO(int, ex_debug); | |
| 169 | EXPROTO(int, ex_delete); | |
| 170 | EXPROTO(int, ex_digraph); | |
| 171 | EXPROTO(int, ex_edit); | |
| 172 | EXPROTO(int, ex_equal); | |
| 173 | EXPROTO(int, ex_errlist); | |
| 174 | EXPROTO(int, ex_file); | |
| 175 | EXPROTO(int, ex_global); | |
| 176 | EXPROTO(int, ex_join); | |
| 177 | EXPROTO(int, ex_list); | |
| 178 | EXPROTO(int, ex_make); | |
| 179 | EXPROTO(int, ex_map); | |
| 180 | EXPROTO(int, ex_mark); | |
| 181 | EXPROTO(int, ex_mkexrc); | |
| 182 | EXPROTO(int, ex_move); | |
| 183 | EXPROTO(int, ex_next); | |
| 184 | EXPROTO(int, ex_number); | |
| 185 | EXPROTO(int, ex_pr); | |
| 186 | EXPROTO(int, ex_preserve); | |
| 187 | EXPROTO(int, ex_prev); | |
| 188 | EXPROTO(int, ex_put); | |
| 189 | EXPROTO(int, ex_quit); | |
| 190 | EXPROTO(int, ex_read); | |
| 191 | EXPROTO(int, ex_rew); | |
| 192 | EXPROTO(int, ex_set); | |
| 193 | EXPROTO(int, ex_shell); | |
| 194 | EXPROTO(int, ex_shiftl); | |
| 195 | EXPROTO(int, ex_shiftr); | |
| 196 | EXPROTO(int, ex_source); | |
| 197 | EXPROTO(int, ex_split); | |
| 198 | EXPROTO(int, ex_stop); | |
| 199 | EXPROTO(int, ex_subagain); | |
| 200 | EXPROTO(int, ex_substitute); | |
| 201 | EXPROTO(int, ex_tagpop); | |
| 202 | EXPROTO(int, ex_tagpush); | |
| 203 | EXPROTO(int, ex_tagtop); | |
| 204 | EXPROTO(int, ex_unabbr); | |
| 205 | EXPROTO(int, ex_undo); | |
| 206 | EXPROTO(int, ex_undol); | |
| 207 | EXPROTO(int, ex_unmap); | |
| 208 | EXPROTO(int, ex_usage); | |
| 209 | EXPROTO(int, ex_validate); | |
| 210 | EXPROTO(int, ex_version); | |
| 211 | EXPROTO(int, ex_vglobal); | |
| 212 | EXPROTO(int, ex_visual); | |
| 213 | EXPROTO(int, ex_viusage); | |
| 214 | EXPROTO(int, ex_wq); | |
| 215 | EXPROTO(int, ex_write); | |
| 216 | EXPROTO(int, ex_xit); | |
| 217 | EXPROTO(int, ex_yank); |