| | 1 | #ifndef lint |
| | 2 | static char *sccsid = "@(#)main.c 3.6 83/08/25"; |
| | 3 | #endif |
| | 4 | |
| | 5 | #include "defs.h" |
| | 6 | |
| | 7 | char escapec = CTRL(p); |
| | 8 | int nbufline = 48; /* compatible */ |
| | 9 | |
| | 10 | #define next(a) (*++*(a) ? *(a) : (*++(a) ? *(a) : (char *)usage())) |
| | 11 | |
| | 12 | /*ARGSUSED*/ |
| | 13 | main(argc, argv) |
| | 14 | char **argv; |
| | 15 | { |
| | 16 | register n; |
| | 17 | register char *p; |
| | 18 | char fflag = 0; |
| | 19 | char dflag = 0; |
| | 20 | int imask; |
| | 21 | struct timezone timezone; |
| | 22 | |
| | 23 | if (p = rindex(*argv, '/')) |
| | 24 | p++; |
| | 25 | else |
| | 26 | p = *argv; |
| | 27 | debug = strcmp(p, "a.out") == 0; |
| | 28 | while (*++argv) { |
| | 29 | if (**argv == '-') { |
| | 30 | switch (*++*argv) { |
| | 31 | case 'f': |
| | 32 | fflag++; |
| | 33 | break; |
| | 34 | case 'e': |
| | 35 | setescape(next(argv)); |
| | 36 | break; |
| | 37 | case 't': |
| | 38 | terse++; |
| | 39 | break; |
| | 40 | case 'd': |
| | 41 | dflag++; |
| | 42 | break; |
| | 43 | case 'D': |
| | 44 | debug++; |
| | 45 | break; |
| | 46 | default: |
| | 47 | (void) usage(); |
| | 48 | } |
| | 49 | } else |
| | 50 | (void) usage(); |
| | 51 | } |
| | 52 | if ((shell = getenv("SHELL")) == 0) |
| | 53 | shell = "/bin/csh"; |
| | 54 | if (shellname = rindex(shell, '/')) |
| | 55 | shellname++; |
| | 56 | else |
| | 57 | shellname = shell; |
| | 58 | (void) gettimeofday(&starttime, &timezone); |
| | 59 | if (wwinit() < 0) { |
| | 60 | (void) fflush(stdout); |
| | 61 | (void) fprintf(stderr, "Can't do windows on this terminal.\n"); |
| | 62 | exit(1); |
| | 63 | } |
| | 64 | if (debug) { |
| | 65 | wwnewtty.ww_tchars.t_quitc = wwoldtty.ww_tchars.t_quitc; |
| | 66 | (void) wwsettty(0, &wwnewtty); |
| | 67 | } |
| | 68 | |
| | 69 | if ((cmdwin = wwopen(WWO_REVERSE, 1, wwncol, 0, 0, 0)) == 0) { |
| | 70 | (void) wwflush(); |
| | 71 | (void) fprintf(stderr, "Can't open command window.\r\n"); |
| | 72 | goto bad; |
| | 73 | } |
| | 74 | if ((framewin = wwopen(WWO_GLASS|WWO_FRAME, wwnrow, wwncol, 0, 0, 0)) |
| | 75 | == 0) { |
| | 76 | (void) wwflush(); |
| | 77 | (void) fprintf(stderr, "Can't open frame window.\r\n"); |
| | 78 | goto bad; |
| | 79 | } |
| | 80 | wwadd(framewin, &wwhead); |
| | 81 | if ((boxwin = wwopen(WWO_GLASS, wwnrow, wwncol, 0, 0, 0)) == 0) { |
| | 82 | (void) wwflush(); |
| | 83 | (void) fprintf(stderr, "Can't open box window.\r\n"); |
| | 84 | goto bad; |
| | 85 | } |
| | 86 | |
| | 87 | curwin = cmdwin; |
| | 88 | wwupdate(); |
| | 89 | wwflush(); |
| | 90 | (void) signal(SIGCHLD, wwchild); |
| | 91 | if (!fflag) { |
| | 92 | if (!terse) |
| | 93 | wwadd(cmdwin, &wwhead); |
| | 94 | if (dflag || doconfig() < 0) |
| | 95 | dodefault(); |
| | 96 | if (selwin != 0) { |
| | 97 | curwin = selwin; |
| | 98 | wwcursor(selwin, 0); |
| | 99 | } |
| | 100 | if (!terse) { |
| | 101 | wwdelete(cmdwin); |
| | 102 | reframe(); |
| | 103 | } |
| | 104 | } |
| | 105 | while (!quit) { |
| | 106 | if (curwin == cmdwin) { |
| | 107 | docmd(); |
| | 108 | continue; |
| | 109 | } |
| | 110 | /* |
| | 111 | * Loop until we get some keyboard input. |
| | 112 | */ |
| | 113 | while (ibufc == 0) { |
| | 114 | wwcurtowin(curwin); |
| | 115 | wwupdate(); |
| | 116 | wwflush(); |
| | 117 | imask = 1 << 0; |
| | 118 | while (wwforce(&imask) < 0) |
| | 119 | ; |
| | 120 | if ((imask & 1 << 0) == 0) |
| | 121 | continue; |
| | 122 | /* NOTE: ibufc == 0 */ |
| | 123 | ibufp = ibuf; |
| | 124 | if ((ibufc = read(0, ibuf, sizeof ibuf)) < 0) { |
| | 125 | ibufc = 0; |
| | 126 | nreade++; |
| | 127 | } else if (ibufc == 0) |
| | 128 | nreadz++; |
| | 129 | else |
| | 130 | nreadc += ibufc; |
| | 131 | nread++; |
| | 132 | } |
| | 133 | /* |
| | 134 | * Weird loop. Copy the buffer to the pty |
| | 135 | * and stopping on the escape character |
| | 136 | * in a hopefully efficient way. |
| | 137 | * Probably a good thing to make ibufc == 1 a special |
| | 138 | * case. |
| | 139 | */ |
| | 140 | for (p = ibufp, n = ibufc;;) { |
| | 141 | if (--n < 0) { |
| | 142 | (void) write(curwin->ww_pty, ibufp, ibufc); |
| | 143 | ibufp = ibuf; |
| | 144 | ibufc = 0; |
| | 145 | break; |
| | 146 | } else if (*p++ == escapec) { |
| | 147 | if ((n = p - ibufp) > 1) |
| | 148 | (void) write(curwin->ww_pty, |
| | 149 | ibufp, n - 1); |
| | 150 | ibufp = p; |
| | 151 | ibufc -= n; |
| | 152 | curwin = cmdwin; |
| | 153 | break; |
| | 154 | } |
| | 155 | } |
| | 156 | } |
| | 157 | wwupdate(); |
| | 158 | wwflush(); |
| | 159 | bad: |
| | 160 | wwend(); |
| | 161 | return 0; |
| | 162 | } |
| | 163 | |
| | 164 | usage() |
| | 165 | { |
| | 166 | (void) fprintf(stderr, "window: [-e escape-char] [-t] [-f] [-d]\n"); |
| | 167 | exit(1); |
| | 168 | return 0; /* for lint */ |
| | 169 | } |
projects / unix-history / blame_incremental