/*
- * 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
- * complete copyright information.
- */
+** 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
+** complete copyright information.
+*/
#include <h/mh.h>
#include <h/addrsbr.h>
#include <h/scansbr.h>
#include <h/tws.h>
#include <h/utils.h>
-
-#ifdef _FSTDIO
-# define _ptr _p /* Gag */
-# define _cnt _w /* Wretch */
-#endif
-
-#ifdef SCO_5_STDIO
-# define _ptr __ptr
-# define _cnt __cnt
-# define _base __base
-# define _filbuf(fp) ((fp)->__cnt = 0, __filbuf(fp))
-#endif
+#include <ctype.h>
+#include <sys/stat.h>
+#include <sysexits.h>
#define MAXSCANL 256 /* longest possible scan line */
-/*
- * 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
-
static struct format *fmt;
-#ifdef JLR
-static struct format *fmt_top;
-#endif /* JLR */
static struct comp *datecomp; /* pntr to "date" comp */
-static struct comp *bodycomp; /* pntr to "body" pseudo-comp (if referenced) */
static int ncomps = 0; /* # of interesting components */
-static char **compbuffers = 0; /* buffers for component text */
-static struct comp **used_buf = 0; /* stack for comp that use buffers */
static int dat[5]; /* aux. data for format routine */
-char *scanl = 0; /* text of most recent scanline */
-
-#define DIEWRERR() adios (scnmsg, "write error on")
+char *scanl = NULL; /* text of most recent scanline */
#define FPUTS(buf) {\
- if (mh_fputs(buf,scnout) == EOF)\
- DIEWRERR();\
+ if (fputs(buf, scnout) == EOF)\
+ adios(EX_IOERR, scnmsg, "write error on");\
}
/*
- * prototypes
- */
-int sc_width (void); /* from termsbr.c */
-static int mh_fputs(char *, FILE *);
+** prototypes
+*/
+int sc_width(void); /* from termsbr.c */
#ifdef MULTIBYTE_SUPPORT
#define SCAN_CHARWIDTH MB_CUR_MAX
#endif
int
-scan (FILE *inb, int innum, int outnum, char *nfs, int width, int curflg,
- int unseen, char *folder, long size, int noisy)
+scan(FILE *inb, int innum, int outnum, char *fmtstr, int width, int curflg,
+ int unseen)
{
- int i, compnum, encrypted, state;
- unsigned char *cp, *tmpbuf;
- char **nxtbuf;
- char *saved_c_text = NULL;
+ static int slwidth;
+ int compnum, i;
+ enum state state;
+ struct field f = {{0}};
+ char *cp;
struct comp *cptr;
- struct comp **savecomp;
char *scnmsg = NULL;
FILE *scnout = NULL;
- char name[NAMESZ];
- static int rlwidth, slwidth;
-
-#ifdef RPATHS
- char returnpath[BUFSIZ];
- char deliverydate[BUFSIZ];
-#endif
+ int incing = (outnum != SCN_MBOX && outnum != SCN_FOLD);
+ int scanfolder = (outnum == SCN_FOLD);
+ long fpos;
+ struct stat st;
+ int blankline;
/* first-time only initialization */
if (!scanl) {
- if (width == 0) {
- if ((width = sc_width ()) < WIDTH/2)
- width = WIDTH/2;
- else if (width > MAXSCANL)
- width = MAXSCANL;
- }
- dat[3] = slwidth = width;
- scanl = (char *) mh_xmalloc((size_t) SCAN_CHARWIDTH * (slwidth + 2) );
- if (outnum)
+ if (incing)
umask(~m_gmprot());
- /* Compile format string */
- ncomps = fmt_compile (nfs, &fmt) + 1;
-
-#ifdef JLR
- fmt_top = fmt;
-#endif /* JLR */
- FINDCOMP(bodycomp, "body");
- FINDCOMP(datecomp, "date");
- FINDCOMP(cptr, "folder");
- if (cptr && folder)
- cptr->c_text = folder;
- FINDCOMP(cptr, "encrypted");
- if (!cptr)
- if ((cptr = (struct comp *) calloc (1, sizeof(*cptr)))) {
- cptr->c_name = "encrypted";
- cptr->c_next = wantcomp[i = CHASH (cptr->c_name)];
- wantcomp[i] = cptr;
- ncomps++;
+ if (fmtstr) {
+ if (width == 0) {
+ if ((width = sc_width()) < WIDTH/2)
+ width = WIDTH/2;
+ else if (width > MAXSCANL)
+ width = MAXSCANL;
+ }
+ dat[3] = slwidth = width;
+ scanl = mh_xcalloc(slwidth + 2, SCAN_CHARWIDTH); /* probably for \n and \0 */
+ /* Compile format string */
+ ncomps = fmt_compile(fmtstr, &fmt) + 1;
+ FINDCOMP(datecomp, "date");
+ } else {
+ ncomps = 1;
+ datecomp = NULL;
}
- FINDCOMP (cptr, "dtimenow");
- if (cptr)
- cptr->c_text = getcpy(dtimenow (0));
- nxtbuf = compbuffers = (char **) calloc((size_t) ncomps, sizeof(char *));
- if (nxtbuf == NULL)
- adios (NULL, "unable to allocate component buffers");
- used_buf = (struct comp **) calloc((size_t) (ncomps+1),
- sizeof(struct comp *));
- if (used_buf == NULL)
- adios (NULL, "unable to allocate component buffer stack");
- used_buf += ncomps+1; *--used_buf = 0;
- rlwidth = bodycomp && (width > SBUFSIZ) ? width : SBUFSIZ;
- for (i = ncomps; i--; )
- *nxtbuf++ = mh_xmalloc(rlwidth);
+ }
+
+ if (feof(inb)) {
+ return SCNEOF;
}
/*
- * each-message initialization
- */
- nxtbuf = compbuffers;
- savecomp = used_buf;
- tmpbuf = *nxtbuf++;
+ ** each-message initialization
+ */
dat[0] = innum ? innum : outnum;
dat[1] = curflg;
dat[4] = unseen;
-
- /*
- * Get the first field. If the message is non-empty
- * and we're doing an "inc", open the output file.
- */
- if ((state = m_getfld (FLD, name, tmpbuf, rlwidth, inb)) == FILEEOF) {
- if (ferror(inb)) {
- advise("read", "unable to"); /* "read error" */
- return SCNFAT;
- } else {
- return SCNEOF;
- }
+ fpos = ftell(inb);
+
+ if (incing) {
+ scnmsg = m_name(outnum);
+ if (*scnmsg == '?') /* msg num out of range */
+ return SCNNUM;
+ if (!(scnout = fopen(scnmsg, "w")))
+ adios(EX_IOERR, scnmsg, "unable to write");
}
-
- 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");
-#ifdef RPATHS
- /*
- * Add the Return-Path and Delivery-Date
- * header fields to message.
- */
- if (get_returnpath (returnpath, sizeof(returnpath),
- deliverydate, sizeof(deliverydate))) {
- FPUTS ("Return-Path: ");
- FPUTS (returnpath);
- FPUTS ("Delivery-Date: ");
- FPUTS (deliverydate);
- }
-#endif /* RPATHS */
- }
-
/* scan - main loop */
- for (compnum = 1; ; state = m_getfld (state, name, tmpbuf, rlwidth, inb)) {
+ for (compnum = 1, state = FLD2; ; ) {
+ state = m_getfld2(state, &f, inb);
switch (state) {
- case FLD:
- case FLDPLUS:
- compnum++;
- if (outnum) {
- FPUTS (name);
- if ( putc (':', scnout) == EOF) DIEWRERR();
- FPUTS (tmpbuf);
- }
+ case LENERR2:
+ state = FLD2;
+ /* FALL */
+ case FLD2:
+ compnum++;
+ if (incing) {
+ FPUTS(f.name);
+ FPUTS(":");
+ FPUTS(f.value);
+ }
+ if (fmtstr && (cptr = wantcomp[CHASH(f.name)])) {
/*
- * if we're interested in this component, save a pointer
- * to the component text, then start using our next free
- * buffer as the component temp buffer (buffer switching
- * saves an extra copy of the component text).
- */
- if ((cptr = wantcomp[CHASH(name)])) {
- do {
- if (!mh_strcasecmp(name, cptr->c_name)) {
- if (! cptr->c_text) {
- cptr->c_text = tmpbuf;
- for (cp = tmpbuf + strlen (tmpbuf) - 1;
- cp >= tmpbuf; cp--)
- if (isspace (*cp))
- *cp = 0;
- else
- break;
- *--savecomp = cptr;
- tmpbuf = *nxtbuf++;
- }
+ ** we're interested in this component,
+ ** but find the right one in the hash
+ ** collision chain ...
+ */
+ do {
+ if (mh_strcasecmp(f.name, cptr->c_name)!=0) {
+ continue;
+ }
+ if (cptr->c_text) {
+ free(cptr->c_text);
+ cptr->c_text = NULL;
+ }
+ cptr->c_text = mh_xstrdup(f.value);
+ cp = cptr->c_text + strlen(cptr->c_text) - 1;
+ for (; cp >= cptr->c_text; cp--) {
+ if (isspace(*cp)) {
+ *cp = '\0';
+ } else {
break;
}
- } while ((cptr = cptr->c_next));
- }
-
- while (state == FLDPLUS) {
- state = m_getfld (state, name, tmpbuf, rlwidth, inb);
- if (outnum)
- FPUTS (tmpbuf);
- }
- break;
+ }
+ break;
+ } while ((cptr = cptr->c_next));
+ }
+ break;
- case BODY:
- compnum = -1;
- if (! outnum) {
- state = FILEEOF; /* stop now if scan cmd */
+ case BODY2:
+ compnum = -1;
+ if (scanfolder) {
+ /* stop here if we scan a msg in a folder */
+ state = FILEEOF2;
+ goto finished;
+ }
+ /* otherwise (mbox): snarf the body */
+ if (strncmp("From ", f.value, 5)==0) {
+ state = FILEEOF2;
+ goto finished;
+ }
+ if (incing) {
+ FPUTS("\n");
+ FPUTS(f.value);
+ }
+body:;
+ blankline = 0;
+ while ((state = m_getfld2(state, &f, inb)) == BODY2) {
+ /*
+ ** recognize From lines without blank lines
+ ** before them as well.
+ */
+ if (strncmp("From ", f.value, 5)==0) {
+ state = FILEEOF2;
goto finished;
}
- if (putc ('\n', scnout) == EOF) DIEWRERR();
- FPUTS (tmpbuf);
/*
- * performance hack: some people like to run "inc" on
- * things like net.sources or large digests. We do a
- * copy directly into the output buffer rather than
- * going through an intermediate buffer.
- *
- * We need the amount of data m_getfld found & don't
- * want to do a strlen on the long buffer so there's
- * a hack in m_getfld to save the amount of data it
- * returned in the global "msg_count".
- */
-body:;
- while (state == BODY) {
-#ifdef LINUX_STDIO
- if (scnout->_IO_write_ptr == scnout->_IO_write_end) {
-#elif defined(__DragonFly__)
- if (((struct __FILE_public *)scnout)->_w <= 0) {
-#else
- if (scnout->_cnt <= 0) {
-#endif
- if (fflush(scnout) == EOF)
- DIEWRERR ();
- }
-#ifdef LINUX_STDIO
- state = m_getfld(state, name, scnout->_IO_write_ptr,
- (long)scnout->_IO_write_ptr-(long)scnout->_IO_write_end , inb);
- scnout->_IO_write_ptr += msg_count;
-#elif defined(__DragonFly__)
- state = m_getfld( state, name, ((struct __FILE_public *)scnout)->_p, -(((struct __FILE_public *)scnout)->_w), inb );
- ((struct __FILE_public *)scnout)->_w -= msg_count;
- ((struct __FILE_public *)scnout)->_p += msg_count;
-#else
- state = m_getfld( state, name, scnout->_ptr, -(scnout->_cnt), inb );
- scnout->_cnt -= msg_count;
- scnout->_ptr += msg_count;
-#endif
+ ** delay the printing of blank lines
+ ** because if it's the end of the message,
+ ** then we must omit the blank line,
+ ** as it is not part of the message but
+ ** part of the mbox format
+ */
+ if (blankline) {
+ /* print the delayed blank line */
+ FPUTS("\n");
+ blankline = 0;
}
- goto finished;
-
- case LENERR:
- case FMTERR:
- fprintf (stderr,
- innum ? "??Format error (message %d) in "
- : "??Format error in ",
- outnum ? outnum : innum);
- fprintf (stderr, "component %d\n", compnum);
-
- if (outnum) {
- FPUTS ("\n\nBAD MSG:\n");
- FPUTS (name);
- if (putc ('\n', scnout) == EOF) DIEWRERR();
- state = BODY;
- goto body;
+ if (strcmp(f.value, "\n")==0) {
+ blankline = 1;
+ continue;
}
- /* fall through */
+ if (incing) {
+ FPUTS(f.value);
+ }
+ }
+ goto finished;
- case FILEEOF:
+ case FMTERR2:
+ if (strncmp("From ", f.value, 5)==0) {
+ state = FILEEOF2;
goto finished;
+ }
+ state = FLD2;
+ fprintf(stderr, innum ?
+ "??Format error (message %d) in " :
+ "??Format error in ",
+ outnum ? outnum : innum);
+ fprintf(stderr, "component %d\n", compnum);
+ continue;
+
+ case IOERR2:
+ fprintf(stderr, innum ?
+ "??Format error (message %d) in " :
+ "??Format error in ",
+ outnum ? outnum : innum);
+ fprintf(stderr, "component %d\n", compnum);
+
+ if (incing) {
+ FPUTS("\n\nBAD MSG:\n");
+ FPUTS(f.name); /* XXX use f.field? */
+ FPUTS("\n");
+ state = BODY2;
+ goto body;
+ }
+ /* fall through if we scan only */
- default:
- adios (NULL, "getfld() returned %d", state);
+ case FILEEOF2:
+ goto finished;
+
+ default:
+ adios(EX_SOFTWARE, NULL, "getfld() returned %d", state);
}
}
- /*
- * format and output the scan line.
- */
finished:
+ /* Format and output the scan line. */
if (ferror(inb)) {
- advise("read", "unable to"); /* "read error" */
+ advise("read", "unable to");
return SCNFAT;
}
- /* Save and restore buffer so we don't trash our dynamic pool! */
- if (bodycomp) {
- saved_c_text = bodycomp->c_text;
- bodycomp->c_text = tmpbuf;
+ if (incing) {
+ if ((dat[2] = ftell(scnout)) == EOF)
+ adios(EX_IOERR, scnmsg, "write error on");
+ } else if (!scanfolder) {
+ if ((dat[2] = ftell(inb)) == EOF)
+ adios(EX_IOERR, scnmsg, "write error on");
+ dat[2] -= fpos;
}
- if (size)
- dat[2] = size;
- else if (outnum > 0)
- {
- dat[2] = ftell(scnout);
- if (dat[2] == EOF) DIEWRERR();
- }
-
- if ((datecomp && !datecomp->c_text) || (!size && !outnum)) {
- struct stat st;
-
- fstat (fileno(inb), &st);
- if (!size && !outnum)
+ if (fmtstr) {
+ fstat(fileno(inb), &st);
+ if (scanfolder) {
dat[2] = st.st_size;
- if (datecomp) {
- if (! datecomp->c_text) {
- if (datecomp->c_tws == NULL)
- datecomp->c_tws = (struct tws *)
- calloc((size_t) 1, sizeof(*datecomp->c_tws));
- if (datecomp->c_tws == NULL)
- adios (NULL, "unable to allocate tws buffer");
- *datecomp->c_tws = *dlocaltime ((time_t *) &st.st_mtime);
+ }
+ if (datecomp && !datecomp->c_text) {
+ if (!datecomp->c_text) {
+ if (!datecomp->c_tws)
+ datecomp->c_tws = mh_xcalloc(1, sizeof(*datecomp->c_tws));
+ if (!datecomp->c_tws)
+ adios(EX_OSERR, NULL, "unable to allocate tws buffer");
+ *datecomp->c_tws = *dlocaltime((time_t *) &st.st_mtime);
datecomp->c_flags |= CF_DATEFAB|CF_TRUE;
} else {
datecomp->c_flags &= ~CF_DATEFAB;
}
}
- }
-
- fmt_scan (fmt, scanl, slwidth, dat);
-
-#if 0
- fmt = fmt_scan (fmt, scanl, slwidth, dat);
- if (!fmt)
- fmt = fmt_top; /* reset for old format files */
-#endif
-
- if (bodycomp)
- bodycomp->c_text = saved_c_text;
- if (noisy)
- fputs (scanl, stdout);
-
- FINDCOMP (cptr, "encrypted");
- encrypted = cptr && cptr->c_text;
-
- /* return dynamically allocated buffers to pool */
- while ((cptr = *savecomp++)) {
- *--nxtbuf = cptr->c_text;
- cptr->c_text = NULL;
+ /* print the scan line */
+ fmt_scan(fmt, scanl, slwidth, dat);
+ fputs(scanl, stdout);
}
- *--nxtbuf = tmpbuf;
-
- if (outnum && (ferror(scnout) || fclose (scnout) == EOF))
- DIEWRERR();
- return (state != FILEEOF ? SCNERR : encrypted ? SCNENC : SCNMSG);
-}
+ /* clean up old values */
+ for (i=0; i < sizeof(wantcomp)/sizeof(wantcomp[0]); i++) {
+ for (cptr=wantcomp[i]; cptr; cptr=cptr->c_next) {
+ if (cptr->c_text) {
+ free(cptr->c_text);
+ cptr->c_text = NULL;
+ }
+ }
+ }
-static int
-mh_fputs(char *s, FILE *stream)
-{
- char c;
+ if (incing && (ferror(scnout) || fclose(scnout) == EOF))
+ adios(EX_IOERR, scnmsg, "write error on");
- while ((c = *s++))
- if (putc (c,stream) == EOF )
- return(EOF);
- return (0);
+ return (state == FILEEOF2 ? SCNMSG : SCNERR);
}
-
projects / mmh / blobdiff