projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 81cea5ea | 1 | /*- |
| d1b73048 KB |
2 | * Copyright (c) 1991, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 81cea5ea KB |
4 | * |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Kenneth Almquist. | |
| 7 | * | |
| 8 | * %sccs.include.redist.c% | |
| 9 | */ | |
| 10 | ||
| 11 | #ifndef lint | |
| 123ce359 | 12 | static char sccsid[] = "@(#)miscbltin.c 8.2 (Berkeley) %G%"; |
| 81cea5ea KB |
13 | #endif /* not lint */ |
| 14 | ||
| 15 | /* | |
| 16 | * Miscelaneous builtins. | |
| 17 | */ | |
| 18 | ||
| 19 | #include "shell.h" | |
| 20 | #include "options.h" | |
| 21 | #include "var.h" | |
| 22 | #include "output.h" | |
| 23 | #include "memalloc.h" | |
| 24 | #include "error.h" | |
| 25 | #include "mystring.h" | |
| 26 | ||
| 27 | #undef eflag | |
| 28 | ||
| 29 | extern char **argptr; /* argument list for builtin command */ | |
| 30 | ||
| 31 | ||
| 32 | /* | |
| 33 | * The read builtin. The -e option causes backslashes to escape the | |
| 34 | * following character. | |
| 35 | * | |
| 36 | * This uses unbuffered input, which may be avoidable in some cases. | |
| 37 | */ | |
| 38 | ||
| 39 | readcmd(argc, argv) char **argv; { | |
| 40 | char **ap; | |
| 41 | int backslash; | |
| 42 | char c; | |
| 43 | int eflag; | |
| 44 | char *prompt; | |
| 45 | char *ifs; | |
| 46 | char *p; | |
| 47 | int startword; | |
| 48 | int status; | |
| 49 | int i; | |
| 50 | ||
| 51 | eflag = 0; | |
| 52 | prompt = NULL; | |
| ddba57cd | 53 | while ((i = nextopt("ep:")) != '\0') { |
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54 | if (i == 'p') |
| 55 | prompt = optarg; | |
| 56 | else | |
| 57 | eflag = 1; | |
| 58 | } | |
| 59 | if (prompt && isatty(0)) { | |
| 60 | out2str(prompt); | |
| 61 | flushall(); | |
| 62 | } | |
| 123ce359 | 63 | if (*(ap = argptr) == NULL) |
| 81cea5ea KB |
64 | error("arg count"); |
| 65 | if ((ifs = bltinlookup("IFS", 1)) == NULL) | |
| 66 | ifs = nullstr; | |
| 67 | status = 0; | |
| 68 | startword = 1; | |
| 69 | backslash = 0; | |
| 70 | STARTSTACKSTR(p); | |
| 71 | for (;;) { | |
| 72 | if (read(0, &c, 1) != 1) { | |
| 73 | status = 1; | |
| 74 | break; | |
| 75 | } | |
| 76 | if (c == '\0') | |
| 77 | continue; | |
| 78 | if (backslash) { | |
| 79 | backslash = 0; | |
| 80 | if (c != '\n') | |
| 81 | STPUTC(c, p); | |
| 82 | continue; | |
| 83 | } | |
| 84 | if (eflag && c == '\\') { | |
| 85 | backslash++; | |
| 86 | continue; | |
| 87 | } | |
| 88 | if (c == '\n') | |
| 89 | break; | |
| 90 | if (startword && *ifs == ' ' && strchr(ifs, c)) { | |
| 91 | continue; | |
| 92 | } | |
| 93 | startword = 0; | |
| 94 | if (backslash && c == '\\') { | |
| 95 | if (read(0, &c, 1) != 1) { | |
| 96 | status = 1; | |
| 97 | break; | |
| 98 | } | |
| 99 | STPUTC(c, p); | |
| 100 | } else if (ap[1] != NULL && strchr(ifs, c) != NULL) { | |
| 101 | STACKSTRNUL(p); | |
| 102 | setvar(*ap, stackblock(), 0); | |
| 103 | ap++; | |
| 104 | startword = 1; | |
| 105 | STARTSTACKSTR(p); | |
| 106 | } else { | |
| 107 | STPUTC(c, p); | |
| 108 | } | |
| 109 | } | |
| 110 | STACKSTRNUL(p); | |
| 111 | setvar(*ap, stackblock(), 0); | |
| 112 | while (*++ap != NULL) | |
| 113 | setvar(*ap, nullstr, 0); | |
| 114 | return status; | |
| 115 | } | |
| 116 | ||
| 117 | ||
| 118 | ||
| 119 | umaskcmd(argc, argv) char **argv; { | |
| 120 | int mask; | |
| 121 | char *p; | |
| 122 | int i; | |
| 123 | ||
| 124 | if ((p = argv[1]) == NULL) { | |
| 125 | INTOFF; | |
| 126 | mask = umask(0); | |
| 127 | umask(mask); | |
| 128 | INTON; | |
| 129 | out1fmt("%.4o\n", mask); /* %#o might be better */ | |
| 130 | } else { | |
| 131 | mask = 0; | |
| 132 | do { | |
| 133 | if ((unsigned)(i = *p - '0') >= 8) | |
| 134 | error("Illegal number: %s", argv[1]); | |
| 135 | mask = (mask << 3) + i; | |
| 136 | } while (*++p != '\0'); | |
| 137 | umask(mask); | |
| 138 | } | |
| 139 | return 0; | |
| 140 | } |