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    Length: 3189 (0xc75)
    Types: TextFile
    Names: »mkhdrs.c«

└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
    └─⟦this⟧ »EUUGD11/euug-87hel/sec1/elm/src/mkhdrs.c« 

TextFile

/**			mkhdrs.c		**/

/** This contains all the header generating routines for the ELM
    program.

    (C) Copyright 1985 Dave Taylor

**/

#include <stdio.h>
#include "headers.h"

extern char in_reply_to[SLEN];

char *strcpy();
unsigned long sleep();

generate_reply_to(msg)
int msg;
{
	/** Generate an 'in-reply-to' message... **/
	char buffer[SLEN];


	if (msg == -1)		/* not a reply! */
	  in_reply_to[0] = '\0';
	else {
	  if (chloc(header_table[msg].from, '!') != -1)
	    tail_of(header_table[msg].from, buffer, FALSE);
	  else
	    strcpy(buffer, header_table[msg].from);
	  sprintf(in_reply_to, "Message from \"%s\" of %s %s, %s at %s",
		  buffer,
		  header_table[msg].month,
		  header_table[msg].day,
		  header_table[msg].year,
		  header_table[msg].time);
	}
}

add_mailheaders(filedesc)
FILE *filedesc;
{
	/** Add the users .mailheaders file if available.  Allow backquoting 
	    in the file, too, for fortunes, etc...*shudder*
	**/

	FILE *fd;
	char filename[SLEN], buffer[LONG_SLEN];

	sprintf(filename, "%s/%s", home, mailheaders);

	if ((fd = fopen(filename, "r")) != NULL) {
	  while (fgets(buffer, LONG_SLEN, fd) != NULL)
	    if (strlen(buffer) < 2) {
	      dprint0(2,
	         "Strlen of line from .elmheaders is < 2 (write_header_info)");
	      if (mail_only)
	        printf("Warning: blank line in %s ignored!\r\n", filename);
	      else {
	        error1("Warning: blank line in %s ignored!", filename);
	        sleep(2);
	      }
	    }
	    else if (occurances_of(BACKQUOTE, buffer) == 2) 
	      expand_backquote(buffer, filedesc);
	    else 
	      fprintf(filedesc, "%s", buffer);

	    fclose(fd);
	}
}

expand_backquote(buffer, filedesc)
char *buffer;
FILE *filedesc;
{
	/** This routine is called with a line of the form:
		Fieldname: `command`
	    and is expanded accordingly..
	**/

	FILE *fd;
	char command[SLEN], command_buffer[SLEN], fname[SLEN],
	     prefix[SLEN];
	register int i, j = 0;

	for (i=0; buffer[i] != BACKQUOTE; i++)
	  prefix[j++] = buffer[i];
	prefix[j] = '\0';

	j = 0;

	for (i=chloc(buffer, BACKQUOTE)+1; buffer[i] != BACKQUOTE;i++)
	  command[j++] = buffer[i];
	command[j] = '\0';

	sprintf(fname,"%s%d", temp_print, getpid());

	sprintf(command_buffer, "%s > %s", command, fname);

	system_call(command_buffer, SH);

	if ((fd = fopen(fname, "r")) == NULL) {
	  if (mail_only)
	    printf("\nbackquoted command \"%s\" in .elmheaders failed\n", 
		   command);
	  else
	    error1("backquoted command \"%s\" in .elmheaders failed", command);
	  return;	
	}

	/* If we get a line that is less than 80 - length of prefix then we
	   can toss it on the same line, otherwise, simply prepend each line
	   *starting with this line* with a leading tab and cruise along */

	if (fgets(command_buffer, SLEN, fd) == NULL) 
	  fprintf(filedesc, prefix);
	else {
	  if (strlen(command_buffer) + strlen(prefix) < 80) 
	    fprintf(filedesc, "%s%s", prefix, command_buffer);
	  else
	    fprintf(filedesc, "%s\n\t%s", prefix, command_buffer);
	  
	  while (fgets(command_buffer, SLEN, fd) != NULL) 
	    fprintf(filedesc, "\t%s", command_buffer);
	
	  fclose(fd);
	}

	unlink(fname);	/* don't leave the temp file laying around! */
}