-
/*
- * anno.c -- annotate messages
- *
- * $Id$
- *
- * 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.
- *
- * Four new options have been added: delete, list, number, and draft.
- * Message header fields are used by the new MIME attachment code in
- * the send command. Adding features to generalize the anno command
- * seemed to be a better approach than the creation of a new command
- * whose features would overlap with those of the anno command.
- *
- * The -draft option causes anno to operate on the current draft file
- * instead of on a message sequence.
- *
- * The -delete option deletes header elements that match the -component
- * field name. If -delete is used without the -text option, the first
- * header field whose field name matches the component name is deleted.
- * If the -delete is used with the -text option, and the -text argument
- * begins with a /, the first header field whose field name matches the
- * component name and whose field body matches the text is deleted. If
- * the -text argument does not begin with a /, then the text is assumed
- * to be the last component of a path name, and the first header field
- * whose field name matches the component name and a field body whose
- * last path name component matches the text is deleted. If the -delete
- * option is used with the new -number option described below, the nth
- * header field whose field name matches the component name is deleted.
- * No header fields are deleted if none of the above conditions are met.
- *
- * The -list option outputs the field bodies from each header field whose
- * field name matches the component name, one per line. If no -text
- * option is specified, only the last path name component of each field
- * body is output. The entire field body is output if the -text option
- * is used; the contents of the -text argument are ignored. If the -list
- * option is used in conjuction with the new -number option described
- * below, each line is numbered starting with 1. A tab separates the
- * number from the field body.
- *
- * The -number option works with both the -delete and -list options as
- * described above. The -number option takes an optional argument. A
- * value of 1 is assumed if this argument is absent.
- */
+** anno.c -- annotate 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.
+**
+** Three new options have been added: delete, list, and number.
+** Message header fields are used by the new MIME attachment code in
+** the send command. Adding features to generalize the anno command
+** seemed to be a better approach than the creation of a new command
+** whose features would overlap with those of the anno command.
+**
+** The -delete option deletes header elements that match the -component
+** field name. If -delete is used without the -text option, the first
+** header field whose field name matches the component name is deleted.
+** If the -delete is used with the -text option, and the -text argument
+** begins with a /, the first header field whose field name matches the
+** component name and whose field body matches the text is deleted. If
+** the -text argument does not begin with a /, then the text is assumed
+** to be the last component of a path name, and the first header field
+** whose field name matches the component name and a field body whose
+** last path name component matches the text is deleted. If the -delete
+** option is used with the new -number option described below, the nth
+** header field whose field name matches the component name is deleted.
+** No header fields are deleted if none of the above conditions are met.
+**
+** The -list option outputs the field bodies from each header field whose
+** field name matches the component name, one per line. If no -text
+** option is specified, only the last path name component of each field
+** body is output. The entire field body is output if the -text option
+** is used; the contents of the -text argument are ignored. If the -list
+** option is used in conjuction with the new -number option described
+** below, each line is numbered starting with 1. A tab separates the
+** number from the field body.
+**
+** The -number option works with both the -delete and -list options as
+** described above. The -number option takes an optional argument. A
+** value of 1 is assumed if this argument is absent.
+*/
#include <h/mh.h>
#include <h/utils.h>
+#include <h/tws.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <utime.h>
+
static struct swit switches[] = {
-#define COMPSW 0
- { "component field", 0 },
-#define INPLSW 1
- { "inplace", 0 },
-#define NINPLSW 2
- { "noinplace", 0 },
-#define DATESW 3
- { "date", 0 },
-#define NDATESW 4
- { "nodate", 0 },
-#define TEXTSW 5
- { "text body", 0 },
-#define VERSIONSW 6
- { "version", 0 },
-#define HELPSW 7
- { "help", 0 },
-#define DRFTSW 8
- { "draft", 2 },
-#define LISTSW 9
- { "list", 1 },
-#define DELETESW 10
- { "delete", 2 },
-#define NUMBERSW 11
- { "number", 2 },
-#define APPENDSW 12
- { "append", 1 },
-#define PRESERVESW 13
- { "preserve", 1 },
-#define NOPRESERVESW 14
- { "nopreserve", 3 },
- { NULL, 0 }
+#define COMPSW 0
+ { "component field", 0 },
+#define DATESW 1
+ { "date", 0 },
+#define NDATESW 2
+ { "nodate", 0 },
+#define TEXTSW 3
+ { "text body", 0 },
+#define VERSIONSW 4
+ { "version", 0 },
+#define HELPSW 5
+ { "help", 0 },
+#define LISTSW 6
+ { "list", 1 },
+#define DELETESW 7
+ { "delete", 2 },
+#define NUMBERSW 8
+ { "number", 2 },
+#define APPENDSW 9
+ { "append", 1 },
+#define PRESERVESW 10
+ { "preserve", 1 },
+#define NOPRESERVESW 11
+ { "nopreserve", 3 },
+ { NULL, 0 }
};
/*
- * static prototypes
- */
-static void make_comp (unsigned char **);
+** static prototypes
+*/
+static void make_comp(unsigned char **);
+static int annosbr(int, char *, char *, char *, int, int, int);
+static int annotate(char *, char *, char *, int, int, int, int);
+static void annolist(char *, char *, char *, int);
int
-main (int argc, char **argv)
+main(int argc, char **argv)
{
- int inplace = 1, datesw = 1;
- int msgnum;
- char *cp, *maildir;
- unsigned char *comp = NULL;
- char *text = NULL, *folder = NULL, buf[BUFSIZ];
- char **argp, **arguments;
- struct msgs_array msgs = { 0, 0, NULL };
- struct msgs *mp;
- int append = 0; /* append annotations instead of default prepend */
- int delete = -2; /* delete header element if set */
- char *draft = (char *)0; /* draft file name */
- int isdf = 0; /* return needed for m_draft() */
- int list = 0; /* list header elements if set */
- int number = 0; /* delete specific number of like elements if set */
+ int datesw = 1;
+ int preserve = 0;
+ int msgnum;
+ char *cp, *maildir;
+ unsigned char *comp = NULL;
+ char *text = NULL, *folder = NULL, buf[BUFSIZ];
+ char *file = NULL;
+ char **argp, **arguments;
+ struct msgs_array msgs = { 0, 0, NULL };
+ struct msgs *mp;
+ int append = 0; /* append annotations instead of default prepend */
+ int delete = -2; /* delete header element if set */
+ int list = 0; /* list header elements if set */
+ int number = 0; /* delete specific number of like elements if set */
+ int havemsgs = 0;
#ifdef LOCALE
- setlocale(LC_ALL, "");
+ setlocale(LC_ALL, "");
#endif
- invo_name = r1bindex (argv[0], '/');
-
- /* read user profile/context */
- context_read();
-
- arguments = getarguments (invo_name, argc, argv, 1);
- argp = arguments;
-
- while ((cp = *argp++)) {
- if (*cp == '-') {
- switch (smatch (++cp, switches)) {
- case AMBIGSW:
- ambigsw (cp, switches);
- done (1);
- case UNKWNSW:
- adios (NULL, "-%s unknown", cp);
-
- case HELPSW:
- snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
- invo_name);
- print_help (buf, switches, 1);
- done (1);
- case VERSIONSW:
- print_version(invo_name);
- done (1);
-
- case COMPSW:
- if (comp)
- adios (NULL, "only one component at a time!");
- if (!(comp = *argp++) || *comp == '-')
- adios (NULL, "missing argument to %s", argp[-2]);
- continue;
-
- case DATESW:
- datesw++;
- continue;
- case NDATESW:
- datesw = 0;
- continue;
-
- case INPLSW:
- inplace++;
- continue;
- case NINPLSW:
- inplace = 0;
- continue;
-
- case TEXTSW:
- if (text)
- adios (NULL, "only one body at a time!");
- if (!(text = *argp++) || *text == '-')
- adios (NULL, "missing argument to %s", argp[-2]);
- continue;
-
- case DELETESW: /* delete annotations */
- delete = 0;
- continue;
-
- case DRFTSW: /* draft message specified */
- draft = "";
- continue;
-
- case LISTSW: /* produce a listing */
- list = 1;
- continue;
-
- case NUMBERSW: /* number listing or delete by number */
- if (number != 0)
- adios (NULL, "only one number at a time!");
-
- if (argp - arguments == argc - 1 || **argp == '-')
- number = 1;
-
- else {
- if (strcmp(*argp, "all") == 0)
- number = -1;
-
- else if (!(number = atoi(*argp)))
- adios (NULL, "missing argument to %s", argp[-2]);
-
- argp++;
- }
-
- delete = number;
- continue;
-
- case APPENDSW: /* append annotations instead of default prepend */
- append = 1;
- continue;
-
- case PRESERVESW: /* preserve access and modification times on annotated message */
- annopreserve(1);
- continue;
-
- case NOPRESERVESW: /* don't preserve access and modification times on annotated message (default) */
- annopreserve(0);
- continue;
- }
+ invo_name = mhbasename(argv[0]);
+
+ /* read user profile/context */
+ context_read();
+
+ arguments = getarguments(invo_name, argc, argv, 1);
+ argp = arguments;
+
+ while ((cp = *argp++)) {
+ if (*cp == '-') {
+ switch (smatch(++cp, switches)) {
+ case AMBIGSW:
+ ambigsw(cp, switches);
+ done(1);
+ case UNKWNSW:
+ adios(NULL, "-%s unknown", cp);
+
+ case HELPSW:
+ snprintf(buf, sizeof(buf),
+ "%s [+folder] [msgs] [switches]",
+ invo_name);
+ print_help(buf, switches, 1);
+ done(1);
+ case VERSIONSW:
+ print_version(invo_name);
+ done(1);
+
+ case COMPSW:
+ if (comp)
+ adios(NULL, "only one component at a time!");
+ if (!(comp = *argp++) || *comp == '-')
+ adios(NULL, "missing argument to %s",
+ argp[-2]);
+ continue;
+
+ case DATESW:
+ datesw++;
+ continue;
+ case NDATESW:
+ datesw = 0;
+ continue;
+
+ case TEXTSW:
+ if (text)
+ adios(NULL, "only one body at a time!");
+ if (!(text = *argp++) || *text == '-')
+ adios(NULL, "missing argument to %s",
+ argp[-2]);
+ continue;
+
+ case DELETESW: /* delete annotations */
+ delete = 0;
+ continue;
+
+ case LISTSW: /* produce a listing */
+ list = 1;
+ continue;
+
+ case NUMBERSW: /* number listing or delete by number */
+ if (number != 0)
+ adios(NULL, "only one number at a time!");
+
+ if (argp-arguments == argc-1 || **argp == '-')
+ number = 1;
+
+ else {
+ if (strcmp(*argp, "all") == 0)
+ number = -1;
+ else if (!(number = atoi(*argp)))
+ /* FIXME: fails for
+ ** `-list -number l:10'
+ ** but okay if we add `all'.
+ */
+ adios(NULL, "missing argument to %s", argp[-1]);
+ argp++;
+ }
+
+ delete = number;
+ continue;
+
+ case APPENDSW:
+ append = 1;
+ continue;
+
+ case PRESERVESW:
+ preserve = 1;
+ continue;
+
+ case NOPRESERVESW:
+ preserve = 0;
+ continue;
+ }
+ }
+ if (*cp == '+' || *cp == '@') {
+ if (folder)
+ adios(NULL, "only one folder at a time!");
+ else
+ folder = getcpy(expandfol(cp));
+ } else if (*cp == '/' || *cp == '.') {
+ if (file)
+ adios(NULL, "only one file at a time!");
+ file = cp;
+ } else {
+ app_msgarg(&msgs, cp);
+ havemsgs = 1;
+ }
+ }
+
+ if (file && (folder || havemsgs)) {
+ adios(NULL, "Don't intermix files and messages.");
}
- if (*cp == '+' || *cp == '@') {
- if (folder)
- adios (NULL, "only one folder at a time!");
- else
- folder = pluspath (cp);
- } else
- app_msgarg(&msgs, cp);
- }
-
- /*
- * We're dealing with the draft message instead of message numbers.
- * Get the name of the draft and deal with it just as we do with
- * message numbers below.
- */
-
- if (draft != (char *)0) {
- if (msgs.size != 0)
- adios(NULL, "can only have message numbers or -draft.");
-
- draft = getcpy(m_draft(folder, (char *)0, 1, &isdf));
make_comp(&comp);
- if (list)
- annolist(draft, comp, text, number);
- else
- annotate (draft, comp, text, inplace, datesw, delete, append);
+ if (file) {
+ if (list)
+ annolist(file, comp, text, number);
+ else
+ annotate(file, comp, text,
+ datesw, delete, append, preserve);
+ done(0);
+ }
+
+ if (!msgs.size)
+ app_msgarg(&msgs, seq_cur);
+ if (!folder)
+ folder = getcurfol();
+ maildir = toabsdir(folder);
+
+ if (chdir(maildir) == NOTOK)
+ adios(maildir, "unable to change directory to");
+
+ /* read folder and create message structure */
+ if (!(mp = folder_read(folder)))
+ adios(NULL, "unable to read folder %s", folder);
+
+ /* check for empty folder */
+ if (mp->nummsg == 0)
+ adios(NULL, "no messages in %s", folder);
+
+ /* parse all the message ranges/sequences and set SELECTED */
+ for (msgnum = 0; msgnum < msgs.size; msgnum++)
+ if (!m_convert(mp, msgs.msgs[msgnum]))
+ done(1);
+
+ /* annotate all the SELECTED messages */
+ for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
+ if (is_selected(mp, msgnum)) {
+ if (list)
+ annolist(m_name(msgnum), comp, text, number);
+ else
+ annotate(m_name(msgnum), comp, text, datesw,
+ delete, append, preserve);
+ }
+ }
+ context_replace(curfolder, folder);
+ seq_setcur(mp, mp->lowsel);
+ seq_save(mp);
+ folder_free(mp);
+ context_save();
done(0);
return 1;
- }
-
-#ifdef UCI
- if (strcmp(invo_name, "fanno") == 0) /* ugh! */
- datesw = 0;
-#endif /* UCI */
-
- if (!context_find ("path"))
- free (path ("./", TFOLDER));
- if (!msgs.size)
- app_msgarg(&msgs, "cur");
- if (!folder)
- folder = getfolder (1);
- maildir = m_maildir (folder);
-
- if (chdir (maildir) == NOTOK)
- adios (maildir, "unable to change directory to");
-
- /* read folder and create message structure */
- if (!(mp = folder_read (folder)))
- adios (NULL, "unable to read folder %s", folder);
-
- /* check for empty folder */
- if (mp->nummsg == 0)
- adios (NULL, "no messages in %s", folder);
-
- /* parse all the message ranges/sequences and set SELECTED */
- for (msgnum = 0; msgnum < msgs.size; msgnum++)
- if (!m_convert (mp, msgs.msgs[msgnum]))
- done (1);
-
- make_comp (&comp);
-
- /* annotate all the SELECTED messages */
- for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
- if (is_selected(mp, msgnum)) {
- if (list)
- annolist(m_name(msgnum), comp, text, number);
- else
- annotate (m_name (msgnum), comp, text, inplace, datesw, delete, append);
+}
+
+static void
+make_comp(unsigned char **ap)
+{
+ register unsigned char *cp;
+ char buffer[BUFSIZ];
+
+ if (*ap == NULL) {
+ printf("Enter component name: ");
+ fflush(stdout);
+
+ if (fgets(buffer, sizeof buffer, stdin) == NULL)
+ done(1);
+ *ap = trimcpy(buffer);
+ }
+
+ if ((cp = *ap + strlen(*ap) - 1) > *ap && *cp == ':')
+ *cp = 0;
+ if (strlen(*ap) == 0)
+ adios(NULL, "null component name");
+ if (**ap == '-')
+ adios(NULL, "invalid component name %s", *ap);
+ if (strlen(*ap) >= NAMESZ)
+ adios(NULL, "too large component name %s", *ap);
+
+ for (cp = *ap; *cp; cp++)
+ if (!isalnum(*cp) && *cp != '-')
+ adios(NULL, "invalid component name %s", *ap);
+}
+
+
+static 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);
}
- }
-
- context_replace (pfolder, folder); /* update current folder */
- seq_setcur (mp, mp->lowsel); /* update current message */
- seq_save (mp); /* synchronize message sequences */
- folder_free (mp); /* free folder/message structure */
- context_save (); /* save the context file */
- done (0);
- return 1;
+ 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.
+*/
static void
-make_comp (unsigned char **ap)
+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)
{
- register unsigned char *cp;
- char buffer[BUFSIZ];
-
- if (*ap == NULL) {
- printf ("Enter component name: ");
- fflush (stdout);
-
- if (fgets (buffer, sizeof buffer, stdin) == NULL)
- done (1);
- *ap = trimcpy (buffer);
- }
-
- if ((cp = *ap + strlen (*ap) - 1) > *ap && *cp == ':')
- *cp = 0;
- if (strlen (*ap) == 0)
- adios (NULL, "null component name");
- if (**ap == '-')
- adios (NULL, "invalid component name %s", *ap);
- if (strlen (*ap) >= NAMESZ)
- adios (NULL, "too large component name %s", *ap);
-
- for (cp = *ap; *cp; cp++)
- if (!isalnum (*cp) && *cp != '-')
- adios (NULL, "invalid component name %s", *ap);
+ 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 ? (int)(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