| 1 | /*- |
| 2 | * Copyright (c) 1992 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Rodney Ruddock of the University of Guelph. |
| 7 | * |
| 8 | * %sccs.include.redist.c% |
| 9 | */ |
| 10 | |
| 11 | #ifndef lint |
| 12 | static char sccsid[] = "@(#)l.c 5.4 (Berkeley) %G%"; |
| 13 | #endif /* not lint */ |
| 14 | |
| 15 | #include <sys/types.h> |
| 16 | |
| 17 | #include <regex.h> |
| 18 | #include <setjmp.h> |
| 19 | #include <stdio.h> |
| 20 | #include <string.h> |
| 21 | |
| 22 | #ifdef DBI |
| 23 | #include <db.h> |
| 24 | #endif |
| 25 | |
| 26 | #include "ed.h" |
| 27 | #include "extern.h" |
| 28 | |
| 29 | /* |
| 30 | * This is the list command. It's not wrapped in with n and p because |
| 31 | * of the unambiguous printing need. |
| 32 | */ |
| 33 | void |
| 34 | l(inputt, errnum) |
| 35 | FILE *inputt; |
| 36 | int *errnum; |
| 37 | { |
| 38 | int l_cnt, l_len = 1; |
| 39 | |
| 40 | if (start_default && End_default) |
| 41 | start = End = current; |
| 42 | else |
| 43 | if (start_default) |
| 44 | start = End; |
| 45 | |
| 46 | if (start == NULL) { |
| 47 | strcpy(help_msg, "empty buffer"); |
| 48 | *errnum = -1; |
| 49 | return; |
| 50 | } |
| 51 | start_default = End_default = 0; |
| 52 | |
| 53 | if (rol(inputt, errnum)) /* For "command-suffix pairs". */ |
| 54 | return; |
| 55 | |
| 56 | current = start; |
| 57 | for (;;) { |
| 58 | /* |
| 59 | * Print out the line character-by-character and split the |
| 60 | * line when line length is at line_length. |
| 61 | */ |
| 62 | if (current == NULL) |
| 63 | break; |
| 64 | get_line(current->handle, current->len); |
| 65 | if (sigint_flag && (!sigspecial)) |
| 66 | SIGINT_ACTION; |
| 67 | for (l_cnt = 0; l_cnt < current->len; l_cnt++, l_len += 2) { |
| 68 | /* Check if line needs to be broken first. */ |
| 69 | if ((l_len) % line_length == 0) |
| 70 | putchar('\n'); |
| 71 | else switch (text[l_cnt]) { |
| 72 | case '\b': /* backspace (cntl-H) */ |
| 73 | fwrite("\\b", sizeof(char), 2, stdout); |
| 74 | break; |
| 75 | case '\t': /* horizontal tab */ |
| 76 | fwrite("\\t", sizeof(char), 2, stdout); |
| 77 | break; |
| 78 | case '\n': /* newline (not that there is one). */ |
| 79 | fwrite("\\n", sizeof(char), 2, stdout); |
| 80 | break; |
| 81 | case '\v': /* vertical tab */ |
| 82 | fwrite("\\v", sizeof(char), 2, stdout); |
| 83 | break; |
| 84 | case '\f': /* form feed */ |
| 85 | fwrite("\\f", sizeof(char), 2, stdout); |
| 86 | break; |
| 87 | case '\r': /* return */ |
| 88 | fwrite("\\r", sizeof(char), 2, stdout); |
| 89 | break; |
| 90 | default: |
| 91 | if ((text[l_cnt] < 32) || |
| 92 | (text[l_cnt] > 126)) { |
| 93 | putchar('\\'); |
| 94 | putchar(text[l_cnt] / 64 + '0'); |
| 95 | putchar(text[l_cnt] / 8 + '0'); |
| 96 | putchar(text[l_cnt] % 8 + '0'); |
| 97 | l_len += 2; |
| 98 | } else if (text[l_cnt] == '\\') |
| 99 | fwrite("\\\\", sizeof(char), 2, stdout); |
| 100 | else { |
| 101 | l_len--; |
| 102 | putchar(text[l_cnt]); |
| 103 | } |
| 104 | break; |
| 105 | } |
| 106 | } |
| 107 | l_len = 1; |
| 108 | putchar('\n'); |
| 109 | if (current == End) |
| 110 | break; |
| 111 | current = current->below; |
| 112 | } |
| 113 | *errnum = 1; |
| 114 | } |