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-rw-r--r--read.c68
1 files changed, 31 insertions, 37 deletions
diff --git a/read.c b/read.c
index 9ff997be..78e054d3 100644
--- a/read.c
+++ b/read.c
@@ -68,7 +68,7 @@ struct mparse {
static void choose_parser(struct mparse *);
static void resize_buf(struct buf *, size_t);
-static void mparse_buf_r(struct mparse *, struct buf, int);
+static void mparse_buf_r(struct mparse *, struct buf, size_t, int);
static int read_whole_file(struct mparse *, const char *, int,
struct buf *, int *);
static void mparse_end(struct mparse *);
@@ -303,27 +303,29 @@ choose_parser(struct mparse *curp)
}
/*
- * Main parse routine for an opened file. This is called for each
- * opened file and simply loops around the full input file, possibly
- * nesting (i.e., with `so').
+ * Main parse routine for a buffer.
+ * It assumes encoding and line numbering are already set up.
+ * It can recurse directly (for invocations of user-defined
+ * macros, inline equations, and input line traps)
+ * and indirectly (for .so file inclusion).
*/
static void
-mparse_buf_r(struct mparse *curp, struct buf blk, int start)
+mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
{
const struct tbl_span *span;
struct buf ln;
+ size_t pos; /* byte number in the ln buffer */
enum rofferr rr;
- int i, of, rc;
- int pos; /* byte number in the ln buffer */
+ int of, rc;
int lnn; /* line number in the real file */
unsigned char c;
- memset(&ln, 0, sizeof(struct buf));
+ memset(&ln, 0, sizeof(ln));
lnn = curp->line;
pos = 0;
- for (i = blk.offs; i < (int)blk.sz; ) {
+ while (i < blk.sz) {
if (0 == pos && '\0' == blk.buf[i])
break;
@@ -333,13 +335,11 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
if (lnn < 3 &&
curp->filenc & MPARSE_UTF8 &&
- curp->filenc & MPARSE_LATIN1) {
- blk.offs = i;
- curp->filenc = preconv_cue(&blk);
- }
+ curp->filenc & MPARSE_LATIN1)
+ curp->filenc = preconv_cue(&blk, i);
}
- while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
+ while (i < blk.sz && (start || blk.buf[i] != '\0')) {
/*
* When finding an unescaped newline character,
@@ -347,7 +347,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
* Skip a preceding carriage return, if any.
*/
- if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
+ if ('\r' == blk.buf[i] && i + 1 < blk.sz &&
'\n' == blk.buf[i + 1])
++i;
if ('\n' == blk.buf[i]) {
@@ -361,7 +361,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
* case of 11 bytes: "\\[u10ffff]\0"
*/
- if (pos + 11 > (int)ln.sz)
+ if (pos + 11 > ln.sz)
resize_buf(&ln, 256);
/*
@@ -370,13 +370,8 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
c = blk.buf[i];
if (c & 0x80) {
- blk.offs = i;
- ln.offs = pos;
- if (curp->filenc && preconv_encode(
- &blk, &ln, &curp->filenc)) {
- pos = ln.offs;
- i = blk.offs;
- } else {
+ if ( ! (curp->filenc && preconv_encode(
+ &blk, &i, &ln, &pos, &curp->filenc))) {
mandoc_vmsg(MANDOCERR_BADCHAR,
curp, curp->line, pos,
"0x%x", c);
@@ -400,7 +395,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
/* Trailing backslash = a plain char. */
- if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
+ if (blk.buf[i] != '\\' || i + 1 == blk.sz) {
ln.buf[pos++] = blk.buf[i++];
continue;
}
@@ -412,7 +407,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
* skip that one as well.
*/
- if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
+ if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&
'\n' == blk.buf[i + 2])
++i;
if ('\n' == blk.buf[i + 1]) {
@@ -424,7 +419,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
i += 2;
/* Comment, skip to end of line */
- for (; i < (int)blk.sz; ++i) {
+ for (; i < blk.sz; ++i) {
if ('\n' == blk.buf[i]) {
++i;
++lnn;
@@ -461,7 +456,7 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
ln.buf[pos++] = blk.buf[i++];
}
- if (pos >= (int)ln.sz)
+ if (pos >= ln.sz)
resize_buf(&ln, 256);
ln.buf[pos] = '\0';
@@ -504,14 +499,14 @@ rerun:
switch (rr) {
case ROFF_REPARSE:
if (REPARSE_LIMIT >= ++curp->reparse_count)
- mparse_buf_r(curp, ln, 0);
+ mparse_buf_r(curp, ln, of, 0);
else
mandoc_msg(MANDOCERR_ROFFLOOP, curp,
curp->line, pos, NULL);
pos = 0;
continue;
case ROFF_APPEND:
- pos = (int)strlen(ln.buf);
+ pos = strlen(ln.buf);
continue;
case ROFF_RERUN:
goto rerun;
@@ -522,8 +517,8 @@ rerun:
assert(MANDOCLEVEL_FATAL <= curp->file_status);
break;
case ROFF_SO:
- if (0 == (MPARSE_SO & curp->options) &&
- (i >= (int)blk.sz || '\0' == blk.buf[i])) {
+ if ( ! (curp->options & MPARSE_SO) &&
+ (i >= blk.sz || blk.buf[i] == '\0')) {
curp->sodest = mandoc_strdup(ln.buf + of);
free(ln.buf);
return;
@@ -650,7 +645,6 @@ read_whole_file(struct mparse *curp, const char *file, int fd,
return(0);
}
*with_mmap = 1;
- fb->offs = 0;
fb->sz = (size_t)st.st_size;
fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
if (fb->buf != MAP_FAILED)
@@ -682,7 +676,6 @@ read_whole_file(struct mparse *curp, const char *file, int fd,
ssz = read(fd, fb->buf + (int)off, fb->sz - off);
if (ssz == 0) {
fb->sz = off;
- fb->offs = 0;
return(1);
}
if (ssz == -1) {
@@ -739,6 +732,7 @@ mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
{
struct buf *svprimary;
const char *svfile;
+ size_t offset;
static int recursion_depth;
if (64 < recursion_depth) {
@@ -759,11 +753,12 @@ mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
(unsigned char)blk.buf[0] == 0xef &&
(unsigned char)blk.buf[1] == 0xbb &&
(unsigned char)blk.buf[2] == 0xbf) {
- blk.offs = 3;
+ offset = 3;
curp->filenc &= ~MPARSE_LATIN1;
- }
+ } else
+ offset = 0;
- mparse_buf_r(curp, blk, 1);
+ mparse_buf_r(curp, blk, offset, 1);
if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)
mparse_end(curp);
@@ -780,7 +775,6 @@ mparse_readmem(struct mparse *curp, const void *buf, size_t len,
blk.buf = UNCONST(buf);
blk.sz = len;
- blk.offs = 0;
mparse_parse_buffer(curp, blk, file);
return(curp->file_status);
generated by cgit (git 2.34.1) at 2024-11-12 19:54:07 +0000