version 1.1, 2008/11/22 14:53:29 |
version 1.5, 2008/11/23 16:53:18 |
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* PERFORMANCE OF THIS SOFTWARE. |
* PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
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#include <assert.h> |
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#include <fcntl.h> |
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#include <err.h> |
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#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "libmdocml.h" |
#include "libmdocml.h" |
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#include "private.h" |
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#define BUFFER_LINE BUFSIZ |
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static int md_run_enter(const struct md_args *, |
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struct md_mbuf *, struct md_rbuf *, void *); |
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static int md_run_leave(const struct md_args *, struct md_mbuf *, |
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struct md_rbuf *, int, void *); |
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static ssize_t md_buf_fill(struct md_rbuf *); |
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static int md_buf_flush(struct md_mbuf *); |
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static ssize_t |
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md_buf_fill(struct md_rbuf *in) |
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{ |
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ssize_t ssz; |
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assert(in); |
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assert(in->buf); |
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assert(in->bufsz > 0); |
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assert(in->name); |
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if (-1 == (ssz = read(in->fd, in->buf, in->bufsz))) |
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warn("%s", in->name); |
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return(ssz); |
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} |
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static int |
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md_buf_flush(struct md_mbuf *buf) |
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{ |
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ssize_t sz; |
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assert(buf); |
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assert(buf->buf); |
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assert(buf->name); |
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if (0 == buf->pos) |
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return(1); |
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sz = write(buf->fd, buf->buf, buf->pos); |
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if (-1 == sz) { |
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warn("%s", buf->name); |
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return(0); |
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} else if ((size_t)sz != buf->pos) { |
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warnx("%s: short write", buf->name); |
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return(0); |
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} |
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buf->pos = 0; |
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return(1); |
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} |
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int |
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md_buf_putchar(struct md_mbuf *buf, char c) |
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{ |
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return(md_buf_puts(buf, &c, 1)); |
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} |
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int |
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md_buf_putstring(struct md_mbuf *buf, const char *p) |
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{ |
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return(md_buf_puts(buf, p, strlen(p))); |
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} |
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int |
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md_buf_puts(struct md_mbuf *buf, const char *p, size_t sz) |
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{ |
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size_t ssz; |
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assert(p); |
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assert(buf); |
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assert(buf->buf); |
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/* LINTED */ |
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while (buf->pos + sz > buf->bufsz) { |
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ssz = buf->bufsz - buf->pos; |
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(void)memcpy(/* LINTED */ |
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buf->buf + buf->pos, p, ssz); |
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p += (long)ssz; |
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sz -= ssz; |
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buf->pos += ssz; |
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if ( ! md_buf_flush(buf)) |
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return(0); |
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} |
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(void)memcpy(/* LINTED */ |
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buf->buf + buf->pos, p, sz); |
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buf->pos += sz; |
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return(1); |
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} |
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static int |
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md_run_leave(const struct md_args *args, struct md_mbuf *mbuf, |
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struct md_rbuf *rbuf, int c, void *data) |
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{ |
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assert(args); |
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assert(mbuf); |
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assert(rbuf); |
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/* Run exiters. */ |
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switch (args->type) { |
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case (MD_HTML4_STRICT): |
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if ( ! md_exit_html4_strict(args, mbuf, rbuf, data)) |
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return(-1); |
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break; |
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case (MD_DUMMY): |
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break; |
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default: |
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abort(); |
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} |
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/* Make final flush of buffer. */ |
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if ( ! md_buf_flush(mbuf)) |
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return(-1); |
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return(c); |
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} |
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static int |
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md_run_enter(const struct md_args *args, struct md_mbuf *mbuf, |
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struct md_rbuf *rbuf, void *p) |
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{ |
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ssize_t sz, i; |
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char line[BUFFER_LINE]; |
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size_t pos; |
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md_line fp; |
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assert(args); |
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assert(mbuf); |
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assert(rbuf); |
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/* Function ptrs to line-parsers. */ |
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switch (args->type) { |
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case (MD_HTML4_STRICT): |
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fp = md_line_html4_strict; |
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break; |
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case (MD_DUMMY): |
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fp = md_line_dummy; |
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break; |
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default: |
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abort(); |
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} |
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/* LINTED */ |
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for (pos = 0; ; ) { |
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if (-1 == (sz = md_buf_fill(rbuf))) |
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return(md_run_leave(args, mbuf, rbuf, -1, p)); |
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else if (0 == sz) |
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break; |
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for (i = 0; i < sz; i++) { |
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if ('\n' == rbuf->buf[i]) { |
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if ( ! (*fp)(args, mbuf, rbuf, line, pos, p)) |
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return(md_run_leave(args, mbuf, rbuf, |
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-1, p)); |
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rbuf->line++; |
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pos = 0; |
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continue; |
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} |
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if (pos < BUFFER_LINE) { |
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/* LINTED */ |
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line[pos++] = rbuf->buf[i]; |
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continue; |
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} |
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warnx("%s: line %zu too long", |
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rbuf->name, rbuf->line); |
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return(md_run_leave(args, mbuf, rbuf, -1, p)); |
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} |
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} |
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if (0 != pos && ! (*fp)(args, mbuf, rbuf, line, pos, p)) |
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return(md_run_leave(args, mbuf, rbuf, -1, p)); |
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return(md_run_leave(args, mbuf, rbuf, 0, p)); |
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} |
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int |
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md_run(const struct md_args *args, |
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const struct md_buf *out, const struct md_buf *in) |
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{ |
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struct md_mbuf mbuf; |
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struct md_rbuf rbuf; |
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void *data; |
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assert(args); |
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assert(in); |
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assert(out); |
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(void)memcpy(&mbuf, out, sizeof(struct md_buf)); |
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(void)memcpy(&rbuf, in, sizeof(struct md_buf)); |
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mbuf.pos = 0; |
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rbuf.line = 1; |
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data = NULL; |
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/* Run initialisers. */ |
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switch (args->type) { |
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case (MD_HTML4_STRICT): |
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if ( ! md_init_html4_strict |
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(args, &mbuf, &rbuf, &data)) |
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return(-1); |
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break; |
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case (MD_DUMMY): |
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break; |
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default: |
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abort(); |
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} |
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/* Go into mainline. */ |
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return(md_run_enter(args, &mbuf, &rbuf, data)); |
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} |