| 1 | |
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| 2 | /* |
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| 3 | * prompter.c -- simple prompting editor front-end |
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| 4 | * |
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| 5 | * $Id: prompter.c,v 1.1.1.1 1999-02-07 18:14:16 danw Exp $ |
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| 6 | */ |
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| 7 | |
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| 8 | #include <h/mh.h> |
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| 9 | #include <fcntl.h> |
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| 10 | #include <h/signals.h> |
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| 11 | #include <errno.h> |
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| 12 | #include <signal.h> |
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| 13 | #include <setjmp.h> |
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| 14 | |
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| 15 | #ifdef HAVE_TERMIOS_H |
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| 16 | # include <termios.h> |
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| 17 | #else |
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| 18 | # ifdef HAVE_TERMIO_H |
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| 19 | # include <termio.h> |
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| 20 | # else |
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| 21 | # include <sgtty.h> |
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| 22 | # endif |
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| 23 | #endif |
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| 24 | |
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| 25 | #define QUOTE '\\' |
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| 26 | |
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| 27 | #ifndef CKILL |
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| 28 | # define CKILL '@' |
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| 29 | #endif |
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| 30 | |
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| 31 | #ifndef CERASE |
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| 32 | # define CERASE '#' |
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| 33 | #endif |
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| 34 | |
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| 35 | static struct swit switches[] = { |
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| 36 | #define ERASESW 0 |
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| 37 | { "erase chr", 0 }, |
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| 38 | #define KILLSW 1 |
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| 39 | { "kill chr", 0 }, |
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| 40 | #define PREPSW 2 |
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| 41 | { "prepend", 0 }, |
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| 42 | #define NPREPSW 3 |
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| 43 | { "noprepend", 0 }, |
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| 44 | #define RAPDSW 4 |
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| 45 | { "rapid", 0 }, |
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| 46 | #define NRAPDSW 5 |
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| 47 | { "norapid", 0 }, |
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| 48 | #define BODYSW 6 |
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| 49 | { "body", -4 }, |
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| 50 | #define NBODYSW 7 |
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| 51 | { "nobody", -6 }, |
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| 52 | #define DOTSW 8 |
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| 53 | { "doteof", 0 }, |
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| 54 | #define NDOTSW 9 |
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| 55 | { "nodoteof", 0 }, |
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| 56 | #define VERSIONSW 10 |
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| 57 | { "version", 0 }, |
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| 58 | #define HELPSW 11 |
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| 59 | { "help", 4 }, |
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| 60 | { NULL, 0 } |
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| 61 | }; |
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| 62 | |
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| 63 | extern int errno; |
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| 64 | |
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| 65 | #ifdef HAVE_TERMIOS_H |
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| 66 | static struct termios tio; |
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| 67 | # define ERASE tio.c_cc[VERASE] |
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| 68 | # define KILL tio.c_cc[VKILL] |
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| 69 | # define INTR tio.c_cc[VINTR] |
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| 70 | #else |
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| 71 | # ifdef HAVE_TERMIO_H |
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| 72 | static struct termio tio; |
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| 73 | # define ERASE tio.c_cc[VERASE] |
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| 74 | # define KILL tio.c_cc[VKILL] |
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| 75 | # define INTR tio.c_cc[VINTR] |
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| 76 | # else |
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| 77 | static struct sgttyb tio; |
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| 78 | static struct tchars tc; |
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| 79 | # define ERASE tio.sg_erase |
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| 80 | # define KILL tio.sg_kill |
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| 81 | # define INTR tc.t_intrc |
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| 82 | # endif |
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| 83 | #endif |
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| 84 | |
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| 85 | static int wtuser = 0; |
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| 86 | static int sigint = 0; |
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| 87 | static jmp_buf sigenv; |
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| 88 | |
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| 89 | /* |
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| 90 | * prototypes |
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| 91 | */ |
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| 92 | int getln (char *, int); |
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| 93 | static int chrcnv (char *); |
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| 94 | static void chrdsp (char *, char); |
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| 95 | static RETSIGTYPE intrser (int); |
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| 96 | |
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| 97 | |
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| 98 | int |
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| 99 | main (int argc, char **argv) |
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| 100 | { |
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| 101 | int body = 1, prepend = 1, rapid = 0; |
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| 102 | int doteof = 0, fdi, fdo, i, state; |
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| 103 | char *cp, *drft = NULL, *erasep = NULL; |
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| 104 | char *killp = NULL, name[NAMESZ], field[BUFSIZ]; |
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| 105 | char buffer[BUFSIZ], tmpfil[BUFSIZ]; |
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| 106 | char **arguments, **argp; |
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| 107 | FILE *in, *out; |
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| 108 | |
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| 109 | #ifdef LOCALE |
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| 110 | setlocale(LC_ALL, ""); |
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| 111 | #endif |
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| 112 | invo_name = r1bindex (argv[0], '/'); |
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| 113 | |
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| 114 | /* read user profile/context */ |
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| 115 | context_read(); |
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| 116 | |
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| 117 | arguments = getarguments (invo_name, argc, argv, 1); |
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| 118 | argp = arguments; |
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| 119 | |
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| 120 | while ((cp = *argp++)) |
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| 121 | if (*cp == '-') { |
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| 122 | switch (smatch (++cp, switches)) { |
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| 123 | case AMBIGSW: |
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| 124 | ambigsw (cp, switches); |
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| 125 | done (1); |
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| 126 | case UNKWNSW: |
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| 127 | adios (NULL, "-%s unknown", cp); |
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| 128 | |
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| 129 | case HELPSW: |
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| 130 | snprintf (buffer, sizeof(buffer), "%s [switches] file", |
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| 131 | invo_name); |
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| 132 | print_help (buffer, switches, 1); |
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| 133 | done (1); |
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| 134 | case VERSIONSW: |
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| 135 | print_version(invo_name); |
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| 136 | done (1); |
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| 137 | |
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| 138 | case ERASESW: |
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| 139 | if (!(erasep = *argp++) || *erasep == '-') |
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| 140 | adios (NULL, "missing argument to %s", argp[-2]); |
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| 141 | continue; |
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| 142 | case KILLSW: |
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| 143 | if (!(killp = *argp++) || *killp == '-') |
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| 144 | adios (NULL, "missing argument to %s", argp[-2]); |
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| 145 | continue; |
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| 146 | |
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| 147 | case PREPSW: |
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| 148 | prepend++; |
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| 149 | continue; |
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| 150 | case NPREPSW: |
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| 151 | prepend = 0; |
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| 152 | continue; |
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| 153 | |
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| 154 | case RAPDSW: |
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| 155 | rapid++; |
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| 156 | continue; |
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| 157 | case NRAPDSW: |
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| 158 | rapid = 0; |
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| 159 | continue; |
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| 160 | |
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| 161 | case BODYSW: |
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| 162 | body++; |
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| 163 | continue; |
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| 164 | case NBODYSW: |
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| 165 | body = 0; |
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| 166 | continue; |
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| 167 | |
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| 168 | case DOTSW: |
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| 169 | doteof++; |
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| 170 | continue; |
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| 171 | case NDOTSW: |
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| 172 | doteof = 0; |
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| 173 | continue; |
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| 174 | } |
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| 175 | } else { |
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| 176 | if (!drft) |
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| 177 | drft = cp; |
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| 178 | } |
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| 179 | |
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| 180 | if (!drft) |
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| 181 | adios (NULL, "usage: %s [switches] file", invo_name); |
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| 182 | if ((in = fopen (drft, "r")) == NULL) |
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| 183 | adios (drft, "unable to open"); |
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| 184 | |
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| 185 | strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil)); |
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| 186 | if ((out = fopen (tmpfil, "w")) == NULL) |
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| 187 | adios (tmpfil, "unable to create"); |
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| 188 | chmod (tmpfil, 0600); |
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| 189 | |
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| 190 | /* |
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| 191 | * Are we changing the kill or erase character? |
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| 192 | */ |
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| 193 | if (killp || erasep) { |
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| 194 | #ifdef HAVE_TERMIOS_H |
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| 195 | cc_t save_erase, save_kill; |
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| 196 | #else |
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| 197 | int save_erase, save_kill; |
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| 198 | #endif |
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| 199 | |
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| 200 | /* get the current terminal attributes */ |
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| 201 | #ifdef HAVE_TERMIOS_H |
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| 202 | tcgetattr(0, &tio); |
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| 203 | #else |
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| 204 | # ifdef HAVE_TERMIO_H |
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| 205 | ioctl(0, TCGETA, &tio); |
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| 206 | # else |
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| 207 | ioctl (0, TIOCGETP, (char *) &tio); |
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| 208 | ioctl (0, TIOCGETC, (char *) &tc); |
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| 209 | # endif |
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| 210 | #endif |
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| 211 | |
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| 212 | /* save original kill, erase character for later */ |
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| 213 | save_kill = KILL; |
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| 214 | save_erase = ERASE; |
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| 215 | |
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| 216 | /* set new kill, erase character in terminal structure */ |
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| 217 | KILL = killp ? chrcnv (killp) : save_kill; |
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| 218 | ERASE = erasep ? chrcnv (erasep) : save_erase; |
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| 219 | |
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| 220 | /* set the new terminal attributes */ |
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| 221 | #ifdef HAVE_TERMIOS_H |
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| 222 | tcsetattr(0, TCSADRAIN, &tio); |
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| 223 | #else |
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| 224 | # ifdef HAVE_TERMIO_H |
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| 225 | ioctl(0, TCSETAW, &tio); |
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| 226 | # else |
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| 227 | ioctl (0, TIOCSETN, (char *) &tio); |
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| 228 | # endif |
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| 229 | #endif |
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| 230 | |
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| 231 | /* print out new kill erase characters */ |
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| 232 | chrdsp ("erase", ERASE); |
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| 233 | chrdsp (", kill", KILL); |
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| 234 | chrdsp (", intr", INTR); |
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| 235 | putchar ('\n'); |
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| 236 | fflush (stdout); |
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| 237 | |
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| 238 | /* |
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| 239 | * We set the kill and erase character back to original |
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| 240 | * setup in terminal structure so we can easily |
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| 241 | * restore it upon exit. |
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| 242 | */ |
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| 243 | KILL = save_kill; |
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| 244 | ERASE = save_erase; |
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| 245 | } |
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| 246 | |
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| 247 | sigint = 0; |
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| 248 | SIGNAL2 (SIGINT, intrser); |
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| 249 | |
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| 250 | /* |
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| 251 | * Loop through the lines of the draft skeleton. |
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| 252 | */ |
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| 253 | for (state = FLD;;) { |
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| 254 | switch (state = m_getfld (state, name, field, sizeof(field), in)) { |
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| 255 | case FLD: |
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| 256 | case FLDEOF: |
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| 257 | case FLDPLUS: |
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| 258 | /* |
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| 259 | * Check if the value of field contains anything |
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| 260 | * other than space or tab. |
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| 261 | */ |
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| 262 | for (cp = field; *cp; cp++) |
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| 263 | if (*cp != ' ' && *cp != '\t') |
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| 264 | break; |
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| 265 | |
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| 266 | /* If so, just add header line to draft */ |
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| 267 | if (*cp++ != '\n' || *cp != 0) { |
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| 268 | printf ("%s:%s", name, field); |
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| 269 | fprintf (out, "%s:%s", name, field); |
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| 270 | while (state == FLDPLUS) { |
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| 271 | state = |
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| 272 | m_getfld (state, name, field, sizeof(field), in); |
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| 273 | printf ("%s", field); |
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| 274 | fprintf (out, "%s", field); |
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| 275 | } |
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| 276 | } else { |
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| 277 | /* Else, get value of header field */ |
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| 278 | printf ("%s: ", name); |
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| 279 | fflush (stdout); |
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| 280 | i = getln (field, sizeof(field)); |
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| 281 | if (i == -1) { |
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| 282 | abort: |
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| 283 | if (killp || erasep) { |
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| 284 | #ifdef HAVE_TERMIOS_H |
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| 285 | tcsetattr(0, TCSADRAIN, &tio); |
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| 286 | #else |
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| 287 | # ifdef HAVE_TERMIO |
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| 288 | ioctl (0, TCSETA, &tio); |
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| 289 | # else |
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| 290 | ioctl (0, TIOCSETN, (char *) &tio); |
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| 291 | # endif |
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| 292 | #endif |
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| 293 | } |
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| 294 | unlink (tmpfil); |
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| 295 | done (1); |
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| 296 | } |
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| 297 | if (i != 0 || (field[0] != '\n' && field[0] != 0)) { |
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| 298 | fprintf (out, "%s:", name); |
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| 299 | do { |
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| 300 | if (field[0] != ' ' && field[0] != '\t') |
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| 301 | putc (' ', out); |
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| 302 | fprintf (out, "%s", field); |
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| 303 | } while (i == 1 |
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| 304 | && (i = getln (field, sizeof(field))) >= 0); |
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| 305 | if (i == -1) |
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| 306 | goto abort; |
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| 307 | } |
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| 308 | } |
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| 309 | |
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| 310 | if (state == FLDEOF) { /* moby hack */ |
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| 311 | fprintf (out, "--------\n"); |
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| 312 | printf ("--------\n"); |
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| 313 | if (!body) |
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| 314 | break; |
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| 315 | goto no_body; |
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| 316 | } |
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| 317 | continue; |
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| 318 | |
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| 319 | case BODY: |
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| 320 | case BODYEOF: |
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| 321 | case FILEEOF: |
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| 322 | if (!body) |
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| 323 | break; |
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| 324 | fprintf (out, "--------\n"); |
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| 325 | if (field[0] == 0 || !prepend) |
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| 326 | printf ("--------\n"); |
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| 327 | if (field[0]) { |
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| 328 | if (prepend && body) { |
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| 329 | printf ("\n--------Enter initial text\n\n"); |
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| 330 | fflush (stdout); |
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| 331 | for (;;) { |
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| 332 | getln (buffer, sizeof(buffer)); |
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| 333 | if (doteof && buffer[0] == '.' && buffer[1] == '\n') |
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| 334 | break; |
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| 335 | if (buffer[0] == 0) |
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| 336 | break; |
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| 337 | fprintf (out, "%s", buffer); |
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| 338 | } |
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| 339 | } |
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| 340 | |
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| 341 | do { |
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| 342 | fprintf (out, "%s", field); |
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| 343 | if (!rapid && !sigint) |
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| 344 | printf ("%s", field); |
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| 345 | } while (state == BODY && |
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| 346 | (state = m_getfld (state, name, field, sizeof(field), in))); |
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| 347 | if (prepend || !body) |
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| 348 | break; |
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| 349 | else |
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| 350 | printf ("\n--------Enter additional text\n\n"); |
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| 351 | } |
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| 352 | no_body: |
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| 353 | fflush (stdout); |
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| 354 | for (;;) { |
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| 355 | getln (field, sizeof(field)); |
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| 356 | if (doteof && field[0] == '.' && field[1] == '\n') |
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| 357 | break; |
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| 358 | if (field[0] == 0) |
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| 359 | break; |
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| 360 | fprintf (out, "%s", field); |
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| 361 | } |
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| 362 | break; |
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| 363 | |
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| 364 | default: |
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| 365 | adios (NULL, "skeleton is poorly formatted"); |
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| 366 | } |
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| 367 | break; |
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| 368 | } |
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| 369 | |
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| 370 | if (body) |
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| 371 | printf ("--------\n"); |
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| 372 | |
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| 373 | fflush (stdout); |
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| 374 | fclose (in); |
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| 375 | fclose (out); |
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| 376 | SIGNAL (SIGINT, SIG_IGN); |
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| 377 | |
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| 378 | if (killp || erasep) { |
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| 379 | #ifdef HAVE_TERMIOS_H |
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| 380 | tcsetattr(0, TCSADRAIN, &tio); |
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| 381 | #else |
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| 382 | # ifdef HAVE_TERMIO_H |
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| 383 | ioctl (0, TCSETAW, &tio); |
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| 384 | # else |
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| 385 | ioctl (0, TIOCSETN, (char *) &tio); |
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| 386 | # endif |
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| 387 | #endif |
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| 388 | } |
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| 389 | |
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| 390 | if ((fdi = open (tmpfil, O_RDONLY)) == NOTOK) |
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| 391 | adios (tmpfil, "unable to re-open"); |
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| 392 | if ((fdo = creat (drft, m_gmprot ())) == NOTOK) |
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| 393 | adios (drft, "unable to write"); |
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| 394 | cpydata (fdi, fdo, tmpfil, drft); |
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| 395 | close (fdi); |
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| 396 | close (fdo); |
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| 397 | unlink (tmpfil); |
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| 398 | |
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| 399 | context_save (); /* save the context file */ |
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| 400 | done (0); |
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| 401 | } |
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| 402 | |
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| 403 | |
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| 404 | int |
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| 405 | getln (char *buffer, int n) |
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| 406 | { |
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| 407 | int c; |
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| 408 | char *cp; |
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| 409 | |
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| 410 | cp = buffer; |
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| 411 | *cp = 0; |
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| 412 | |
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| 413 | switch (setjmp (sigenv)) { |
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| 414 | case OK: |
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| 415 | wtuser = 1; |
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| 416 | break; |
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| 417 | |
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| 418 | case DONE: |
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| 419 | wtuser = 0; |
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| 420 | return 0; |
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| 421 | |
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| 422 | default: |
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| 423 | wtuser = 0; |
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| 424 | return NOTOK; |
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| 425 | } |
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| 426 | |
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| 427 | for (;;) { |
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| 428 | switch (c = getchar ()) { |
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| 429 | case EOF: |
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| 430 | clearerr (stdin); |
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| 431 | longjmp (sigenv, DONE); |
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| 432 | |
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| 433 | case '\n': |
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| 434 | if (cp[-1] == QUOTE) { |
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| 435 | cp[-1] = c; |
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| 436 | wtuser = 0; |
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| 437 | return 1; |
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| 438 | } |
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| 439 | *cp++ = c; |
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| 440 | *cp = 0; |
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| 441 | wtuser = 0; |
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| 442 | return 0; |
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| 443 | |
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| 444 | default: |
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| 445 | if (cp < buffer + n) |
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| 446 | *cp++ = c; |
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| 447 | *cp = 0; |
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| 448 | } |
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| 449 | } |
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| 450 | } |
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| 451 | |
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| 452 | |
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| 453 | static RETSIGTYPE |
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| 454 | intrser (int i) |
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| 455 | { |
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| 456 | #ifndef RELIABLE_SIGNALS |
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| 457 | SIGNAL (SIGINT, intrser); |
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| 458 | #endif |
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| 459 | |
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| 460 | if (wtuser) |
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| 461 | longjmp (sigenv, NOTOK); |
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| 462 | sigint++; |
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| 463 | } |
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| 464 | |
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| 465 | |
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| 466 | static int |
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| 467 | chrcnv (char *cp) |
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| 468 | { |
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| 469 | return (*cp != QUOTE ? *cp : m_atoi (++cp)); |
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| 470 | } |
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| 471 | |
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| 472 | |
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| 473 | static void |
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| 474 | chrdsp (char *s, char c) |
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| 475 | { |
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| 476 | printf ("%s ", s); |
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| 477 | if (c < ' ' || c == 0177) |
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| 478 | printf ("^%c", c ^ 0100); |
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| 479 | else |
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| 480 | printf ("%c", c); |
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| 481 | } |
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