static void pnm_get(ByteIOContext *f, char *str, int buf_size)
{
char *s;
int c;
/* skip spaces and comments */
for(;;) {
c = url_fgetc(f);
if (c == '#') {
do {
c = url_fgetc(f);
} while (c != '\n' && c != URL_EOF);
} else if (!pnm_space(c)) {
break;
}
}
s = str;
while (c != URL_EOF && !pnm_space(c)) {
if ((s - str) < buf_size - 1)
*s++ = c;
c = url_fgetc(f);
}
*s = '\0';
}
static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
char buf[4096], *q;
int c;
AVFormatContext *ic = NULL;
ByteIOContext *f = s->pb;
/* parse each URL and try to open it */
c = url_fgetc(f);
while (c != URL_EOF) {
/* skip spaces */
for(;;) {
if (!redir_isspace(c))
break;
c = url_fgetc(f);
}
if (c == URL_EOF)
break;
/* record url */
q = buf;
for(;;) {
if (c == URL_EOF || redir_isspace(c))
break;
if ((q - buf) < sizeof(buf) - 1)
*q++ = c;
c = url_fgetc(f);
}
*q = '\0';
//printf("URL='%s'\n", buf);
/* try to open the media file */
if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
break;
}
if (!ic)
return AVERROR(EIO);
*s = *ic;
url_fclose(f);
return 0;
}
/* called from utils.c */
int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f)
{
char buf[4096], *q;
int c;
AVFormatContext *ic = NULL;
/* parse each URL and try to open it */
c = url_fgetc(f);
while (c != URL_EOF) {
/* skip spaces */
for(;;) {
if (!redir_isspace(c))
break;
c = url_fgetc(f);
}
if (c == URL_EOF)
break;
/* record url */
q = buf;
for(;;) {
if (c == URL_EOF || redir_isspace(c))
break;
if ((q - buf) < sizeof(buf) - 1)
*q++ = c;
c = url_fgetc(f);
}
*q = '\0';
//printf("URL='%s'\n", buf);
/* try to open the media file */
if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
break;
}
*ic_ptr = ic;
if (!ic)
return AVERROR_IO;
else
return 0;
}
static int xspf_list_files(ByteIOContext *b, char ***flist_ptr, int *len_ptr)
{
int i, j, c;
unsigned int buflen;
char state;
char **flist, **flist_tmp;
char buf[1024];
char buf_tag[10] = {0};
const char match_tag[] = "<location>";
flist = NULL;
state = buflen = i = j = 0;
while ((c = url_fgetc(b))) {
if (c == EOF)
break;
if (state == 0) {
memmove(buf_tag, buf_tag+1, 9);
buf_tag[9] = c;
if (!memcmp(buf_tag, match_tag, 10))
state = 1;
} else {
if (c == '<') {
termfn:
buf[i++] = 0;
flist_tmp = av_fast_realloc(flist, &buflen, sizeof(*flist) * (j+2));
if (!flist_tmp) {
av_log(NULL, AV_LOG_ERROR, "av_realloc error in m3u_list_files\n");
av_free(flist);
return AVERROR_NOMEM;
} else
flist = flist_tmp;
flist[j] = av_malloc(i);
av_strlcpy(flist[j++], buf, i);
i = 0;
state = 0;
buf_tag[sizeof(buf_tag)-1] = c;
continue;
} else {
buf[i++] = c;
if (i >= sizeof(buf)-1)
goto termfn;
}
}
}
*flist_ptr = flist;
*len_ptr = j;
if (!flist) // no files have been found
return AVERROR_EOF;
flist[j] = 0;
return 0;
}
DataNode *ff_datanode_tree_from_ini(ByteIOContext *p)
{
int c;
char *s;
char e;
int i, b;
DataNode *o;
DataNode *d;
d = av_malloc(sizeof(*d));
memset(d, 0, sizeof(*d));
o = d;
s = d->name;
e = 1;
i = b = 0;
while (1) {
c = url_fgetc(p);
if (c == 0 || c == EOF)
break;
if (c == '\n') {
d = ff_datanode_mknext(d);
i = b = 0;
s = d->name;
e = 1;
continue;
}
if (!e) {
continue;
}
if (c == '#') {
e = 0;
continue;
}
if (c == '[') {
if (d->parent) {
d = d->parent;
}
d = ff_datanode_mknext(d);
i = b = 0;
s = d->name;
continue;
}
if (c == ']') {
d = ff_datanode_mkchild(d);
i = b = 0;
s = d->name;
continue;
}
if (c == '=') {
i = b = 0;
s = d->value;
continue;
}
if (i >= b-1) {
b += DATANODE_STR_BUFSIZE;
if (s == d->name) {
s = av_realloc(s, b);
d->name = s;
}
else if (s == d->value) {
s = av_realloc(s, b);
d->value = s;
}
}
s[i++] = c;
s[i] = 0;
}
return o;
}
DataNode *ff_datanode_tree_from_xml(ByteIOContext *p)
{
int c;
char *s;
char tag;
// tag:
// 0 = awaiting opening tag
// 1 = either in the opening tag or closing parent
// 2 = awaiting closing tag
// 3 = either in the closing tag or opening child
char ncn; // no closing needed if true
char quo; // text is in quotes if true
char ctg; // this is the closing tag if true
int i, b;
DataNode *o;
DataNode *d;
int ctgidx; // current index in ctgbuf
int ctgbuflen; // buffer length of ctgbuf
char *ctgbuf = 0;
// ctgbuf: used to verify that closing tag matches opening tag name
d = av_malloc(sizeof(*d));
memset(d, 0, sizeof(*d));
o = d;
s = d->name;
tag = ncn = quo = ctg = ctgidx = ctgbuflen = i = b = 0;
while (1) {
c = url_fgetc(p);
if (c == 0 || c == EOF)
break;
parsetag:
if (quo) { // we're in quoted text, tag changes don't matter
if (c == '"') { // quote closed
quo = 0;
}
goto writeoutput;
}
else if (c == '"') { // quote opened
quo = 1;
goto writeoutput;
}
if (c == '\n' || c == ' ' || c == '\t')
continue;
if (tag == 0) { // awaiting opening tag
if (c == '<') { // opening tag
tag = 1;
d = ff_datanode_mknext(d);
i = b = 0;
s = d->name;
continue;
}
}
else if (tag == 1) { // in the opening tag
if (c == '>') { // opening tag closed
if (ncn) { // no closing tag needed
ncn = 0;
tag = 0;
}
else
tag = 2;
i = b = 0;
s = d->value;
continue;
}
else if (c == '/') {
if (d->name) { // tag closed, no closing tag needed
ncn = 1;
continue;
}
else { // closing parent
tag = 3;
ctg = 1;
ctgidx = 0;
memset(ctgbuf, 0, ctgbuflen);
d = d->parent;
s = d->name;
continue;
}
}
else if (c == ' ') { // no longer tag name but attributes
// ignore attributes by null-terminating string
c = 0;
}
}
else if (tag == 2) { // awaiting closing tag
if (c == '<') { // closing tag
tag = 3;
i = b = 0;
s = d->name;
continue;
}
}
else if (tag == 3) { // either in the closing tag or opening a new one
if (ctg) {
if (ctgidx >= ctgbuflen-1) {
ctgbuflen += DATANODE_STR_BUFSIZE;
ctgbuf = av_realloc(ctgbuf, ctgbuflen);
}
if (c == '>') {
if (strncmp(d->name, ctgbuf, strlen(d->name)) ||
strlen(d->name) != ctgidx) {
fprintf(stderr, "malformed closing tag for %s\n", d->name);
// closing anyways
}
// closing tag closed
ctg = 0;
memset(ctgbuf, 0, ctgbuflen);
ctgidx = 0;
tag = 0;
}
else if (c == ' ') { // ignore spaces and material afterwards
ctgbuf[ctgidx++] = 0;
ctgbuf[ctgidx] = 0;
}
else {
ctgbuf[ctgidx++] = c;
ctgbuf[ctgidx] = 0;
}
continue;
}
if (c == '/') { // closing tag
ctg = 1;
continue;
}
else { // opening child tag
tag = 1;
d = ff_datanode_mkchild(d);
i = b = 0;
s = d->name;
goto parsetag;
}
}
writeoutput:
if (i >= b-1) {
b += DATANODE_STR_BUFSIZE;
if (s == d->name) {
s = av_realloc(s, b);
d->name = s;
}
else if (s == d->value) {
s = av_realloc(s, b);
d->value = s;
}
}
s[i++] = c;
s[i] = 0;
}
return o;
}