+++ /dev/null
-/*
-** annosbr.c -- prepend annotation to messages
-**
-** 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/tws.h>
-#include <h/utils.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <utime.h>
-
-
-/*
-** static prototypes
-*/
-static int annosbr(int, char *, char *, char *, int, int, int);
-
-
-int
-annotate(char *file, char *comp, char *text, int datesw,
- int delete, int append, int preserve)
-{
- int i, fd;
- struct utimbuf b;
- struct stat s;
-
- /* open and lock the file to be annotated */
- if ((fd = lkopen(file, O_RDWR, 0)) == NOTOK) {
- switch (errno) {
- case ENOENT:
- break;
- default:
- admonish(file, "unable to lock and open");
- break;
- }
- return 1;
- }
-
- if (stat(file, &s) == -1) {
- advise("can't get access and modification times for %s", file);
- preserve = 0;
- }
-
- b.actime = s.st_atime;
- b.modtime = s.st_mtime;
-
- i = annosbr(fd, file, comp, text, datesw, delete, append);
-
- if (preserve && utime(file, &b) == -1) {
- advise("can't set access and modification times for %s", file);
- }
- lkclose(fd, file);
- return i;
-}
-
-/*
-** Produce a listing of all header fields (annotations) whose field
-** name matches comp. Number the listing if number is set. Treat the
-** field bodies as path names and just output the last component unless
-** text is non-NULL. We don't care what text is set to.
-*/
-void
-annolist(char *file, char *comp, char *text, int number)
-{
- int c;
- int count; /* header field (annotation) counter */
- char *cp;
- char *field;
- int field_size;
- FILE *fp;
- int length;
- int n; /* number of bytes written */
- char *sp;
-
- if ((fp = fopen(file, "r")) == NULL) {
- adios(file, "unable to open");
- }
-
- /* We'll grow this buffer as needed. */
- field = (char *)mh_xmalloc(field_size = 256);
-
- length = strlen(comp); /* Convenience copy. */
- count = 0;
-
- do {
- /*
- ** Get a line from the input file, growing the field buffer
- ** as needed. We do this so that we can fit an entire line
- ** in the buffer making it easy to do a string comparison
- ** on both the field name and the field body which might be
- ** a long path name.
- */
- for (n = 0, cp = field; (c = getc(fp)) != EOF; *cp++ = c) {
- if (c == '\n' && (c = getc(fp)) != ' ' && c != '\t') {
- ungetc(c, fp);
- c = '\n';
- break;
- }
- if (++n >= field_size - 1) {
- field = (char *)mh_xrealloc(field,
- field_size += 256);
- cp = field + n - 1;
- }
- }
- *cp = '\0';
-
- if (strncasecmp(field, comp, length)==0 &&
- field[length] == ':') {
- for (cp = field + length + 1;
- *cp == ' ' || *cp == '\t'; cp++) {
- continue;
- }
- if (number) {
- printf("%d\t", ++count);
- }
- if (!text && (sp = strrchr(cp, '/'))) {
- cp = sp + 1;
- }
- printf("%s\n", cp);
- }
-
- } while (*field && *field != '-');
-
- free(field);
- fclose(fp);
-
- return;
-}
-
-static int
-annosbr(int fd, char *file, char *comp, char *text, int datesw, int delete,
- int append)
-{
- int mode, tmpfd;
- char *cp, *sp;
- char tmpfil[BUFSIZ];
- struct stat st;
- FILE *tmp;
- int c;
- int count; /* header field (annotation) counter */
- char *field = NULL;
- int field_size = 0;
- FILE *fp = NULL;
- int length;
- int n; /* number of bytes written */
-
- mode = fstat(fd, &st) != NOTOK ? (st.st_mode & 0777) : m_gmprot();
-
- strncpy(tmpfil, m_mktemp2(file, "annotate", NULL, &tmp),
- sizeof(tmpfil));
- chmod(tmpfil, mode);
-
- /*
- ** We're going to need to copy some of the message file to the
- ** temporary file while examining the contents. Convert the
- ** message file descriptor to a file pointer since it's a lot
- ** easier and more efficient to use stdio for this. Also allocate
- ** a buffer to hold the header components as they're read in.
- ** This buffer is grown as needed later.
- */
- if (delete >= -1 || append != 0) {
- if ((fp = fdopen(fd, "r")) == NULL) {
- adios(NULL, "unable to fdopen file.");
- }
- field = (char *)mh_xmalloc(field_size = 256);
- }
-
- /*
- ** We're trying to delete a header field (annotation) if the
- ** delete flag is greater -2. A value greater than zero
- ** means that we're deleting the nth header field that matches
- ** the field (component) name. A value of zero means that
- ** we're deleting the first field in which both the field name
- ** matches the component name and the field body matches the text.
- ** The text is matched in its entirety if it begins with a slash;
- ** otherwise the text is matched against whatever portion of the
- ** field body follows the last slash. This allows matching of
- ** both absolute and relative path names. This is because this
- ** functionality was added to support attachments. It might be
- ** worth having a separate flag to indicate path name matching
- ** to make it more general. A value of -1 means to delete all
- ** matching fields.
- */
- if (delete >= -1) {
- length = strlen(comp); /* convenience copy */
- count = 0; /* Only used if we're deleting by number. */
-
- /*
- ** Copy lines from the input file to the temporary file
- ** until we either find the one that we're looking
- ** for (which we don't copy) or we reach the end of
- ** the headers. Both a blank line and a line beginning
- ** with a - terminate the headers so that we can handle
- ** both drafts and RFC-2822 format messages.
- */
- do {
- /*
- ** Get a line from the input file, growing the
- ** field buffer as needed. We do this so that
- ** we can fit an entire line in the buffer making
- ** it easy to do a string comparison on both the
- ** field name and the field body which might be
- ** a long path name.
- */
- for (n=0, cp=field; (c=getc(fp)) != EOF; *cp++ = c) {
- if (c == '\n' && (c = getc(fp)) != ' ' &&
- c != '\t') {
- ungetc(c, fp);
- c = '\n';
- break;
- }
-
- if (++n >= field_size - 1) {
- field = (char *) mh_xrealloc(field,
- field_size *= 2);
- cp = field + n - 1;
- }
- }
- *cp = '\0';
-
- /*
- ** Check for a match on the field name. We delete
- ** the line by not copying it to the temporary
- ** file if
- **
- ** o The delete flag is 0, meaning that we're
- ** going to delete the first matching
- ** field, and the text is NULL meaning that
- ** we don't care about the field body.
- **
- ** o The delete flag is 0, meaning that we're
- ** going to delete the first matching
- ** field, and the text begins with a / meaning
- ** that we're looking for a full path name,
- ** and the text matches the field body.
- **
- ** o The delete flag is 0, meaning that we're
- ** going to delete the first matching
- ** field, the text does not begin with a /
- ** meaning that we're looking for the last
- ** path name component, and the last path
- ** name component matches the text.
- **
- ** o The delete flag is positive meaning that
- ** we're going to delete the nth field
- ** with a matching field name, and this is
- ** the nth matching field name.
- **
- ** o The delete flag is -1 meaning that we're
- ** going to delete all fields with a
- ** matching field name.
- */
- if (strncasecmp(field, comp, length)==0 &&
- field[length] == ':') {
- if (!delete) {
- if (!text) {
- break;
- }
- for (cp=field+length+1;
- *cp==' ' || *cp=='\t';
- cp++) {
- continue;
- }
- if (*text == '/' &&
- strcmp(cp, text)==0) {
- break;
- } else {
- if ((sp = strrchr(cp, '/'))) {
- cp = sp + 1;
- }
- if (strcmp(cp, text)==0) {
- break;
- }
- }
- } else if (delete == -1) {
- continue;
- } else if (++count == delete) {
- break;
- }
- }
-
- /*
- ** This line wasn't a match so copy it to the
- ** temporary file.
- */
- if ((n = fputs(field, tmp)) == EOF ||
- (c=='\n' && fputc('\n', tmp)==EOF)) {
- adios(NULL, "unable to write temporary file.");
- }
- } while (*field && *field != '-');
- free(field);
-
- } else {
- /*
- ** Find the end of the headers before adding the
- ** annotations if we're appending instead of the default
- ** prepending. A special check for no headers is needed
- ** if appending.
- */
- if (append) {
- /*
- ** Copy lines from the input file to the temporary
- ** file until we reach the end of the headers.
- */
- if ((c = getc(fp)) == '\n') {
- rewind(fp);
- } else {
- putc(c, tmp);
- while ((c = getc(fp)) != EOF) {
- putc(c, tmp);
- if (c == '\n') {
- ungetc(c = getc(fp), fp);
- if (c == '\n' || c == '-') {
- break;
- }
- }
- }
- }
- }
-
- if (datesw) {
- fprintf(tmp, "%s: %s\n", comp, dtimenow(0));
- }
- if ((cp = text)) {
- do {
- while (*cp == ' ' || *cp == '\t') {
- cp++;
- }
- sp = cp;
- while (*cp && *cp++ != '\n') {
- continue;
- }
- if (cp - sp) {
- fprintf(tmp, "%s: %*.*s", comp,
- (int)(cp - sp),
- (int)(cp - sp), sp);
- }
- } while (*cp);
- if (cp[-1] != '\n' && cp != text) {
- putc('\n', tmp);
- }
- }
- }
- fflush(tmp);
-
- /*
- ** We've been messing with the input file position. Move the
- ** input file descriptor to the current place in the file
- ** because the stock data copying routine uses the descriptor,
- ** not the pointer.
- */
- if (append || delete >= -1) {
- if (lseek(fd, (off_t)ftell(fp), SEEK_SET) == (off_t)-1) {
- adios(NULL, "can't seek.");
- }
- }
-
- cpydata(fd, fileno(tmp), file, tmpfil);
- fclose(tmp);
-
- if ((tmpfd = open(tmpfil, O_RDONLY)) == NOTOK) {
- adios(tmpfil, "unable to open for re-reading");
- }
- lseek(fd, (off_t) 0, SEEK_SET);
-
- /*
- ** We're making the file shorter if we're deleting a header field
- ** so the file has to be truncated or it will contain garbage.
- */
- if (delete >= -1 && ftruncate(fd, 0) == -1) {
- adios(tmpfil, "unable to truncate.");
- }
- cpydata(tmpfd, fd, tmpfil, file);
- close(tmpfd);
- unlink(tmpfil);
-
- /*
- ** Close the delete file so that we don't run out of file pointers if
- ** we're doing piles of files. Note that this will make the close() in
- ** lkclose() fail, but that failure is ignored so it's not a problem.
- */
- if (delete >= -1) {
- fclose(fp);
- }
- return 0;
-}
projects / mmh / blobdiff