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/*
* This routine handles the PostScript prologs that might
* be included through:
*
* - Default
* - Use of PostScript fonts
* - Specific inclusion through specials, etc.
* - Use of graphic specials that require them.
*
* Things are real simple. We build a linked list of headers to
* include. Then, when the time comes, we simply copy those
* headers down.
*/
#include "dvips.h" /* The copyright notice in that file is included too! */
struct header_list *header_head ;
/*
* The external routines we use.
*/
#include "protos.h"
extern char errbuf[] ;
extern integer fontmem, swmem ;
#ifndef KPATHSEA
extern char *headerpath ;
#endif
extern char *infont ;
extern int headersready ;
#ifdef DEBUG
extern integer debug_flag ;
#endif
#ifdef HPS
extern Boolean noprocset ;
extern Boolean HPS_FLAG ;
#endif
int
add_name(char *s, struct header_list **what)
{
return (int) add_name_general (s, what, NULL, NULL);
}
/*
* This more general routine adds a name to a list of unique
* names.
*/
int
add_name_general(char *s, struct header_list **what, char *pre, char *post)
{
struct header_list *p, *q ;
for (p = *what ; p != NULL; p = p->next)
if (strcmp(p->name, s)==0)
return 0 ;
q = (struct header_list *)mymalloc((integer)(sizeof(struct header_list)
+ strlen(s))) ;
q->Hname = infont ;
q->next = NULL ;
q->precode = pre ;
q->postcode = post ;
strcpy(q->name, s) ;
if (*what == NULL)
*what = q ;
else {
for (p = *what; p->next != NULL; p = p->next) ;
p->next = q ;
}
return 1 ;
}
/*
* This function checks the virtual memory usage of a header file.
* If we can find a VMusage comment, we use that; otherwise, we use
* length of the file.
*/
void
checkhmem(char *s, char *pre, char *post)
{
FILE *f ;
f = search(headerpath, s, READBIN) ;
if (pre || post) {
if (f==NULL)
f = search(figpath, s, READBIN) ;
}
if (f==0) {
(void)sprintf(errbuf, "! Couldn't find header file %s.\nNote that an absolute path or a relative path with .. are denied in -R2 mode.", s) ;
error(errbuf) ;
} else {
int len, i, j ;
long mem = -1 ;
char buf[1024] ;
len = fread(buf, sizeof(char), 1024, f) ;
for (i=0; i<len-20; i++)
if (buf[i]=='%' && strncmp(buf+i, "%%VMusage:", 10)==0) {
if (sscanf(buf+i+10, "%d %ld", &j, &mem) != 2)
mem = -1 ;
break ;
}
if (mem == -1) {
mem = 0 ;
while (len > 0) {
mem += len ;
len = fread(buf, sizeof(char), 1024, f) ;
}
}
if (mem < 0)
mem = DNFONTCOST ;
(*close_file) (f) ;
#ifdef DEBUG
if (dd(D_HEADER))
(void)fprintf(stderr, "Adding header file \"%s\" %ld\n",
s, mem) ;
#endif
fontmem -= mem ;
if (fontmem > 0) /* so we don't count it twice. */
swmem -= mem ;
}
}
/*
* This routine is responsible for adding a header file. We also
* calculate the VM usage. If we can find a VMusage comment, we
* use that; otherwise, we use the length of the file.
*/
int
add_header(char *s)
{
return (int) add_header_general (s, NULL, NULL);
}
int
add_header_general(char *s, char *pre, char *post)
{
int r ;
r = add_name_general(s, &header_head, pre, post) ;
if (r) {
if (headersready == 1) {
struct header_list *p = header_head ;
while (p) {
checkhmem(p->name, p->precode, p->postcode) ;
p = p->next ;
}
headersready = 2 ;
} else if (headersready == 2) {
checkhmem(s, pre, post) ;
}
}
return r ;
}
/*
* This routine runs down a list, returning each in order.
*/
static struct header_list *CUR_head = NULL ;
char *
get_name(struct header_list **what)
{
if (what && *what) {
char *p = (*what)->name ;
infont = (*what)->Hname ;
CUR_head = *what ;
*what = (*what)->next ;
return p ;
} else
return 0 ;
}
/*
* This routine actually sends the headers.
*/
void
send_headers(void) {
struct header_list *p = header_head ;
char *q ;
while (0 != (q=get_name(&p))) {
#ifdef DEBUG
if (dd(D_HEADER))
(void)fprintf(stderr, "Sending header file \"%s\"\n", q) ;
#endif
#ifdef HPS
if (HPS_FLAG) {
if (strcmp(q,"target.dct")==0) noprocset = 1 ;
}
#endif
copyfile_general(q, CUR_head) ;
}
infont = 0 ;
}
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