-
-/*
- * scansbr.c -- routines to help scan along...
+/* scansbr.c -- routines to help scan along...
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
#include <h/scansbr.h>
#include <h/tws.h>
#include <h/utils.h>
-
-/*
- * Buffer size for content part of header fields. We want this
- * to be large enough so that we don't do a lot of extra FLDPLUS
- * calls on m_getfld but small enough so that we don't snarf
- * the entire message body when we're only going to display 30
- * characters of it.
- */
-#define SBUFSIZ 512
+#include "sbr/terminal.h"
static struct format *fmt;
static struct comp *datecomp; /* pntr to "date" comp */
#define DIEWRERR() adios (scnmsg, "write error on")
+#define PUTC(c) \
+ if (putc((c), scnout) == EOF) \
+ DIEWRERR();
+
#define FPUTS(buf) {\
if (fputs(buf,scnout) == EOF)\
DIEWRERR();\
}
+/* outnum determines how the input from inb is copied. If positive then
+ * it is the number of the message to create, e.g. for inc(1), and all
+ * of the email is copied into that message, with some tweaks. If 0,
+ * e.g. `scan 42', then reading inb can dubiously stop after a whole
+ * buffer of body, even though this might not be enough to fulfill the
+ * scan format and width. Or if -1 then no copy is being created, but
+ * all of inb must be read because the next message must be found, e.g.
+ * `scan -file foo.mbox'. */
+
int
scan (FILE *inb, int innum, int outnum, char *nfs, int width, int curflg,
int unseen, char *folder, long size, int noisy, charstring_t *scanl)
{
+ static bool deja_vu;
+ static int tty_width;
int i, compnum, encrypted, state;
char *cp, *tmpbuf, *startbody, **nxtbuf;
char *saved_c_text = NULL;
scanl used to be a global. */
if (! *scanl) {
if (width == -1) {
- /* Default: width of the terminal, but at least WIDTH/2. */
- if ((width = sc_width ()) < WIDTH/2)
- width = WIDTH/2;
+ if (!deja_vu) {
+ deja_vu = true;
+ tty_width = sc_width();
+ }
+
+ width = max(tty_width, WIDTH / 2);
} else if (width == 0) {
/* Unlimited width. */
width = INT_MAX;
}
dat[3] = slwidth = width;
- *scanl = charstring_create (width < NMH_BUFSIZ ? width : NMH_BUFSIZ);
+ *scanl = charstring_create (min(width, NMH_BUFSIZ));
if (outnum)
umask(~m_gmprot());
nxtbuf = compbuffers = mh_xcalloc(ncomps, sizeof *nxtbuf);
used_buf = mh_xcalloc(ncomps + 1, sizeof *used_buf);
used_buf += ncomps+1; *--used_buf = 0;
- rlwidth = bodycomp && (width > SBUFSIZ)
- ? min (width, NMH_BUFSIZ)
- : SBUFSIZ;
+ rlwidth = NMH_BUFSIZ;
for (i = ncomps; i--; )
*nxtbuf++ = mh_xmalloc(rlwidth);
}
return SCNEOF;
}
- if (outnum) {
- if (outnum > 0) {
- scnmsg = m_name (outnum);
- if (*scnmsg == '?') /* msg num out of range */
- return SCNNUM;
- } else {
- scnmsg = "/dev/null";
- }
- if ((scnout = fopen (scnmsg, "w")) == NULL)
- adios (scnmsg, "unable to write");
+ if (outnum > 0) {
+ scnmsg = m_name (outnum);
+ if (*scnmsg == '?') /* msg num out of range */
+ return SCNNUM;
+ if ((scnout = fopen (scnmsg, "w")) == NULL)
+ adios (scnmsg, "unable to write");
}
/* scan - main loop */
case FLD:
case FLDPLUS:
compnum++;
- if (outnum) {
+ if (scnout) {
FPUTS (name);
- if ( putc (':', scnout) == EOF) DIEWRERR();
+ PUTC(':');
FPUTS (tmpbuf);
}
/*
while (state == FLDPLUS) {
bufsz = rlwidth;
state = m_getfld (&gstate, name, tmpbuf, &bufsz, inb);
- if (outnum)
+ if (scnout)
FPUTS (tmpbuf);
}
break;
state = m_getfld (&gstate, name, tmpbuf + i, &bufsz, inb);
}
- if (! outnum) {
+ if (outnum == 0) {
state = FILEEOF; /* stop now if scan cmd */
if (bodycomp && startbody == NULL)
startbody = tmpbuf;
goto finished;
}
- if (putc ('\n', scnout) == EOF) DIEWRERR();
- FPUTS (tmpbuf);
+ if (scnout) {
+ PUTC('\n');
+ FPUTS (tmpbuf);
+ }
/*
* The previous code here used to call m_getfld() using
* pointers to the underlying output stdio buffers to
while (state == BODY) {
bufsz = rlwidth;
state = m_getfld (&gstate, name, tmpbuf, &bufsz, inb);
- FPUTS(tmpbuf);
+ if (scnout)
+ FPUTS(tmpbuf);
}
goto finished;
fprintf (stderr, "component %d\n", compnum);
- if (outnum) {
+ if (scnout) {
FPUTS ("\n\nBAD MSG:\n");
FPUTS (name);
- if (putc ('\n', scnout) == EOF) DIEWRERR();
+ PUTC('\n');
state = BODY;
goto body;
}
- /* FALLTHRU */
+ goto finished;
case FILEEOF:
goto finished;
if (size)
dat[2] = size;
- else if (outnum > 0)
+ else if (scnout)
{
dat[2] = ftell(scnout);
if (dat[2] == EOF) DIEWRERR();
cptr->c_text = NULL;
}
- if (outnum && (ferror(scnout) || fclose (scnout) == EOF))
+ if (scnout && (ferror(scnout) || fclose (scnout) == EOF))
DIEWRERR();
return (state != FILEEOF ? SCNERR : encrypted ? SCNENC : SCNMSG);
/* The following two functions allow access to the global gstate above. */
void
-scan_finished () {
+scan_finished(void) {
m_getfld_state_destroy (&gstate);
}
projects / nmh / blobdiff