X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/92c3b05ef3e582d64b3cecfc261fdd66ef13a4ef..9291a5f82480f2458e04cb9ea7e6749bc952b308:/uip/mhlsbr.c diff --git a/uip/mhlsbr.c b/uip/mhlsbr.c index df0e24bf..0fbdc6cd 100644 --- a/uip/mhlsbr.c +++ b/uip/mhlsbr.c @@ -5,12 +5,28 @@ * complete copyright information. */ -#include -#include -#include -#include -#include -#include +#include "h/mh.h" +#include "sbr/r1bindex.h" +#include "sbr/snprintb.h" +#include "sbr/copyip.h" +#include "sbr/discard.h" +#include "sbr/trimcpy.h" +#include "sbr/vfgets.h" +#include "sbr/check_charset.h" +#include "sbr/getcpy.h" +#include "sbr/brkstring.h" +#include "sbr/ambigsw.h" +#include "sbr/pidstatus.h" +#include "sbr/print_version.h" +#include "sbr/print_help.h" +#include "sbr/arglist.h" +#include "sbr/error.h" +#include "h/signals.h" +#include "h/addrsbr.h" +#include "h/fmt_scan.h" +#include "h/tws.h" +#include "h/done.h" +#include "h/utils.h" #include "sbr/m_popen.h" #include #include @@ -259,9 +275,9 @@ static char *addrcomps[] = { static int bellflg = 0; static int clearflg = 0; static int dashstuff = 0; -static int dobody = 1; -static int forwflg = 0; -static int forwall = 0; +static bool dobody = true; +static bool forwflg; +static bool forwall; static int sleepsw = NOTOK; @@ -270,7 +286,7 @@ static int volume = 0; static int issue = 0; static int exitstat = 0; -static int mhldebug = 0; +static bool mhldebug; static int filesize = 0; @@ -298,14 +314,11 @@ static int num_ignores = 0; static char *ignores[MAXARGS]; static jmp_buf env; -static jmp_buf mhlenv; static char delim3[] = /* from forw.c */ "\n----------------------------------------------------------------------\n\n"; static char delim4[] = "\n------------------------------\n\n"; -static FILE *(*mhl_action)(char *); - /* * prototypes */ @@ -325,6 +338,7 @@ static void putcomp (struct mcomp *, struct mcomp *, int); static char *oneline (char *, unsigned long); static void putstr (char *, unsigned long); static void putch (char, unsigned long); +static bool linefeed_typed(void); static void intrser (int); static void pipeser (int); static void quitser (int); @@ -339,7 +353,8 @@ static void compile_filterargs (void); int mhl (int argc, char **argv) { - int length = 0, nomore = 0; + int length = 0; + bool nomore = false; unsigned int i, vecp = 0; int width = 0; char *cp, *folder = NULL, *form = NULL; @@ -353,7 +368,7 @@ mhl (int argc, char **argv) argp = arguments; if ((cp = getenv ("MHLDEBUG")) && *cp) - mhldebug++; + mhldebug = true; while ((cp = *argp++)) { if (*cp == '-') { @@ -406,7 +421,7 @@ mhl (int argc, char **argv) mhladios (NULL, "missing argument to %s", argp[-2]); continue; case NPROGSW: - nomore++; + nomore = true; continue; case FMTPROCSW: @@ -448,10 +463,10 @@ mhl (int argc, char **argv) continue; case FORW2SW: - forwall++; + forwall = true; /* FALLTHRU */ case FORW1SW: - forwflg++; + forwflg = true; clearflg = -1;/* XXX */ continue; @@ -463,7 +478,7 @@ mhl (int argc, char **argv) continue; case NBODYSW: - dobody = 0; + dobody = false; continue; } } @@ -475,12 +490,8 @@ mhl (int argc, char **argv) if (isatty (fileno (stdout))) { if (!nomore && moreproc && *moreproc != '\0') { - if (mhl_action) { - SIGNAL (SIGINT, SIG_IGN); - SIGNAL2 (SIGQUIT, quitser); - } SIGNAL2 (SIGPIPE, pipeser); - m_popen (moreproc, mhl_action != NULL); + m_popen(moreproc, false); ontty = PITTY; } else { SIGNAL (SIGINT, SIG_IGN); @@ -747,7 +758,7 @@ evalvar (struct mcomp *c1) if (!strcasecmp (name, "length")) return ptoi (name, &c1->c_length); if (!strcasecmp (name, "nodashstuffing")) - return (dashstuff = -1); + return dashstuff = -1; for (ap = triples; ap->t_name; ap++) if (!strcasecmp (ap->t_name, name)) { @@ -879,7 +890,7 @@ process (char *folder, char *fname, int ofilen, int ofilec) switch (setjmp (env)) { case OK: if (fname) { - fp = mhl_action ? (*mhl_action) (fname) : fopen (fname, "r"); + fp = fopen(fname, "r"); if (fp == NULL) { advise (fname, "unable to open"); exitstat++; @@ -911,7 +922,7 @@ process (char *folder, char *fname, int ofilen, int ofilec) default: if (ontty != PITTY) SIGNAL (SIGINT, SIG_IGN); - if (mhl_action == NULL && fp != stdin && fp != NULL) + if (fp != stdin && fp != NULL) fclose (fp); free(holder.c_text); holder.c_text = NULL; @@ -938,7 +949,7 @@ mhlfile (FILE *fp, char *mname, int ofilen, int ofilec) if (digest) fputs(ofilen == 1 ? delim3 : delim4, stdout); else { - printf ("\n-------"); + fputs("\n-------", stdout); if (ofilen == 1) printf (" Forwarded Message%s", PLURALS(ofilec)); else @@ -960,7 +971,6 @@ mhlfile (FILE *fp, char *mname, int ofilen, int ofilec) break; case ISTTY: - strncpy (buf, "\n", sizeof(buf)); if (ofilec > 1) { if (SOprintf ("Press to list \"%s\"...", mname)) { if (ofilen > 1) @@ -968,12 +978,8 @@ mhlfile (FILE *fp, char *mname, int ofilen, int ofilec) printf ("Press to list \"%s\"...", mname); } fflush (stdout); - buf[0] = 0; - if (read (fileno (stdout), buf, sizeof(buf)) < 0) { - advise ("stdout", "read"); - } } - if (strchr(buf, '\n')) { + if (ofilec == 1 || linefeed_typed()) { if ((global.c_flags & CLEARSCR)) nmh_clear_screen (); } @@ -1111,7 +1117,7 @@ mcomp_flags (char *name) for (ap = pairs; ap->p_name; ap++) if (!strcasecmp (ap->p_name, name)) - return (ap->p_flags); + return ap->p_flags; return 0; } @@ -1277,7 +1283,8 @@ putcomp (struct mcomp *c1, struct mcomp *c2, int flag) { char *text; /* c1's text, or the name as a fallback. */ char *trimmed_prefix; - int count, cchdr; + int count; + bool cchdr; char *cp; const int utf8 = strcasecmp(get_charset(), "UTF-8") == 0; @@ -1292,7 +1299,7 @@ putcomp (struct mcomp *c1, struct mcomp *c2, int flag) * blank lines. */ trimmed_prefix = rtrim(mh_xstrdup(FENDNULL(text))); - cchdr = 0; + cchdr = false; lm = 0; llim = c1->c_length ? c1->c_length : -1; wid = c1->c_width ? c1->c_width : global.c_width; @@ -1335,7 +1342,7 @@ putcomp (struct mcomp *c1, struct mcomp *c2, int flag) if (!(c1->c_flags & SPLIT)) c1->c_flags |= HDROUTPUT; - cchdr++; + cchdr = true; if ((count = c1->c_cwidth - strlen(text) - 2) > 0) while (count--) putstr (" ", c1->c_flags); @@ -1354,7 +1361,7 @@ putcomp (struct mcomp *c1, struct mcomp *c2, int flag) if (!(c1->c_flags & SPLIT)) c2->c_flags |= HDROUTPUT; - cchdr++; + cchdr = true; if ((count = c1->c_cwidth - strlen (c2->c_name) - 2) > 0) while (count--) putstr (" ", c1->c_flags); @@ -1407,18 +1414,18 @@ putcomp (struct mcomp *c1, struct mcomp *c2, int flag) static char * oneline (char *stuff, unsigned long flags) { - int spc; + bool spc; char *cp, *ret; if (onelp == NULL) onelp = stuff; if (*onelp == 0) - return (onelp = NULL); + return onelp = NULL; ret = onelp; term = 0; if (flags & COMPRESS) { - for (spc = 1, cp = ret; *onelp; onelp++) + for (spc = true, cp = ret; *onelp; onelp++) if (isspace ((unsigned char) *onelp)) { if (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT))) { term = '\n'; @@ -1427,12 +1434,12 @@ oneline (char *stuff, unsigned long flags) } if (!spc) { *cp++ = ' '; - spc++; + spc = true; } } else { *cp++ = *onelp; - spc = 0; + spc = false; } *cp = 0; @@ -1507,8 +1514,6 @@ putstr (char *string, unsigned long flags) static void putch (char ch, unsigned long flags) { - char buf[BUFSIZ]; - if (llim == 0) return; @@ -1523,11 +1528,7 @@ putch (char ch, unsigned long flags) if (global.c_flags & BELL) putchar ('\007'); fflush (stdout); - buf[0] = 0; - if (read (fileno (stdout), buf, sizeof(buf)) < 0) { - advise ("stdout", "read"); - } - if (strchr(buf, '\n')) { + if (linefeed_typed()) { if (global.c_flags & CLEARSCR) nmh_clear_screen (); row = 0; @@ -1597,6 +1598,34 @@ putch (char ch, unsigned long flags) } } +/* linefeed_typed() makes a single read(2) from stdin and returns true + * if a linefeed character is amongst the characters read. + * A read error is treated as if linefeed wasn't typed. + * + * Typing on a TTY can cause read() to return data without typing Enter + * by using the TTY's EOF character instead, normally ASCII EOT, Ctrl-D. + * The linefeed can also be escaped with the TTY's LNEXT character, + * normally ASCII SYN, Ctrl-V, by typing Ctrl-V Ctrl-J. + * It's not possible to distinguish between the user typing a buffer's + * worth of characters and then EOT, or more than the buffer can hold. + * Either way, the result depends on ASCII LF, either from typing Enter + * or an escaped Ctrl-J, being amongst the read characters. + */ +static bool +linefeed_typed(void) +{ + char buf[128]; + ssize_t n; + + n = read(0, buf, sizeof buf); + if (n == -1) { + advise("stdin", "read"); + return false; /* Treat as EOF. */ + } + + return memchr(buf, '\n', n); +} + static void intrser (int i) @@ -1645,8 +1674,6 @@ static void mhldone (int status) { exitstat = status; - if (mhl_action) - longjmp (mhlenv, DONE); done (exitstat); } @@ -1733,11 +1760,11 @@ filterbody (struct mcomp *c1, char *buf, int bufsz, int state, */ if (pipe(fdinput) < 0) { - adios(NULL, "Unable to create input pipe"); + die("Unable to create input pipe"); } if (pipe(fdoutput) < 0) { - adios(NULL, "Unable to create output pipe"); + die("Unable to create output pipe"); } /* @@ -1792,7 +1819,7 @@ filterbody (struct mcomp *c1, char *buf, int bufsz, int state, */ _exit(0); case -1: - adios(NULL, "Unable to fork for filter writer process"); + die("Unable to fork for filter writer process"); break; } @@ -1867,7 +1894,7 @@ filterbody (struct mcomp *c1, char *buf, int bufsz, int state, break; case -1: - adios(NULL, "Unable to fork format program"); + die("Unable to fork format program"); } /* @@ -1890,7 +1917,7 @@ filterbody (struct mcomp *c1, char *buf, int bufsz, int state, } if (cc < 0) { - adios(NULL, "reading from formatproc"); + die("reading from formatproc"); } /*