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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 declarations:
*/
#include "protos.h"
static int add_name_general(const char *s, struct header_list **what,
char *pre, char *post);
int
add_name(const 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.
*/
static int
add_name_general(const 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)));
q->name = mymalloc(strlen(s) + 1);
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(const 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) {
char *msg = concat ("! Couldn't find header file: ", s);
if (secure == 2) {
msg = concat (msg,
"\nAbsolute and ../relative paths are denied in -R2 mode.");
}
error(msg);
} 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))
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(const char *s)
{
return (int) add_header_general (s, NULL, NULL);
}
int
add_header_general(const 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))
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 = NULL;
}
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