From 8837f199608ac2e321f75653736747b1e692072f Mon Sep 17 00:00:00 2001 From: Knagis Date: Wed, 8 Oct 2014 11:39:47 +0300 Subject: Implemented stack-based algorithm for matching emphasis --- src/inlines.c | 218 ++++++++++++++++++++++++---------------------------------- 1 file changed, 88 insertions(+), 130 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 71d75e9..589b3c3 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -10,11 +10,19 @@ #include "scanners.h" #include "inlines.h" +typedef struct InlineStack { + inline_stack *previous; + node_inl *first_inline; + int delim_count; + char delim_char; +} inline_stack; + typedef struct Subject { chunk input; int pos; int label_nestlevel; reference_map *refmap; + inline_stack *last_emphasis; } subject; static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); @@ -158,6 +166,7 @@ static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap) e->pos = 0; e->label_nestlevel = 0; e->refmap = refmap; + e->last_emphasis = NULL; chunk_rtrim(&e->input); } @@ -170,6 +179,7 @@ static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap) e->pos = 0; e->label_nestlevel = 0; e->refmap = refmap; + e->last_emphasis = NULL; chunk_rtrim(&e->input); } @@ -262,12 +272,11 @@ static node_inl* handle_backticks(subject *subj) } // Scan ***, **, or * and return number scanned, or 0. -// Don't advance position. +// Advances position. static int scan_delims(subject* subj, char c, bool * can_open, bool * can_close) { int numdelims = 0; char char_before, char_after; - int startpos = subj->pos; char_before = subj->pos == 0 ? '\n' : peek_at(subj, subj->pos - 1); while (peek_char(subj) == c) { @@ -281,135 +290,93 @@ static int scan_delims(subject* subj, char c, bool * can_open, bool * can_close) *can_open = *can_open && !isalnum(char_before); *can_close = *can_close && !isalnum(char_after); } - subj->pos = startpos; return numdelims; } // Parse strong/emph or a fallback. // Assumes the subject has '_' or '*' at the current position. -static node_inl* handle_strong_emph(subject* subj, char c) +static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) { bool can_open, can_close; - node_inl * result = NULL; - node_inl ** last = malloc(sizeof(node_inl *)); - node_inl * new; - node_inl * il; - node_inl * first_head = NULL; - node_inl * first_close = NULL; - int first_close_delims = 0; int numdelims; + int useDelims; + inline_stack * istack; + node_inl * inl; + node_inl * emph; + node_inl * inl_text; + + numdelims = scan_delims(subj, c, &can_open, &can_close); - *last = NULL; + if (can_close) + { + // walk the stack and find a matching opener, if there is one + istack = subj->last_emphasis; + while (true) + { + if (istack == NULL) + goto cannotClose; - numdelims = scan_delims(subj, c, &can_open, &can_close); - subj->pos += numdelims; - - new = make_str(chunk_dup(&subj->input, subj->pos - numdelims, numdelims)); - *last = new; - first_head = new; - result = new; - - if (!can_open || numdelims == 0) { - goto done; - } - - switch (numdelims) { - case 1: - while (true) { - numdelims = scan_delims(subj, c, &can_open, &can_close); - if (numdelims >= 1 && can_close) { - subj->pos += 1; - first_head->tag = INL_EMPH; - chunk_free(&first_head->content.literal); - first_head->content.inlines = first_head->next; - first_head->next = NULL; - goto done; - } else { - if (!parse_inline(subj, last)) { - goto done; - } - } - } - break; - case 2: - while (true) { - numdelims = scan_delims(subj, c, &can_open, &can_close); - if (numdelims >= 2 && can_close) { - subj->pos += 2; - first_head->tag = INL_STRONG; - chunk_free(&first_head->content.literal); - first_head->content.inlines = first_head->next; - first_head->next = NULL; - goto done; - } else { - if (!parse_inline(subj, last)) { - goto done; - } - } - } - break; - case 3: - while (true) { - numdelims = scan_delims(subj, c, &can_open, &can_close); - if (can_close && numdelims >= 1 && numdelims <= 3 && - numdelims != first_close_delims) { - new = make_str(chunk_dup(&subj->input, subj->pos, numdelims)); - append_inlines(*last, new); - *last = new; - if (first_close_delims == 1 && numdelims > 2) { - numdelims = 2; - } else if (first_close_delims == 2) { - numdelims = 1; - } else if (numdelims == 3) { - // If we opened with ***, we interpret it as ** followed by * - // giving us - numdelims = 1; - } - subj->pos += numdelims; - if (first_close) { - first_head->tag = first_close_delims == 1 ? INL_STRONG : INL_EMPH; - chunk_free(&first_head->content.literal); - first_head->content.inlines = - make_inlines(first_close_delims == 1 ? INL_EMPH : INL_STRONG, - first_head->next); - - il = first_head->next; - while (il->next && il->next != first_close) { - il = il->next; - } - il->next = NULL; - - first_head->content.inlines->next = first_close->next; - - il = first_head->content.inlines; - while (il->next && il->next != *last) { - il = il->next; - } - il->next = NULL; - free_inlines(*last); - - first_close->next = NULL; - free_inlines(first_close); - first_head->next = NULL; - goto done; - } else { - first_close = *last; - first_close_delims = numdelims; - } - } else { - if (!parse_inline(subj, last)) { - goto done; - } - } - } - break; - default: - goto done; + if (istack->delim_char == c) + break; + + istack = istack->previous; + } + + // calculate the actual number of delimeters used from this closer + useDelims = istack->delim_count; + if (useDelims == 3) useDelims = numdelims == 3 ? 1 : numdelims; + else if (useDelims > numdelims) useDelims = 1; + + if (istack->delim_count == useDelims) + { + // the opener is completely used up - remove the stack entry and reuse the inline element + inl = istack->first_inline; + inl->tag = useDelims == 1 ? INL_EMPH : INL_STRONG; + chunk_free(&inl->content.literal); + inl->content.inlines = inl->next; + inl->next = NULL; + + subj->last_emphasis = istack->previous; + istack->previous = NULL; + *last = inl; + free(istack); + } + else + { + // the opener will only partially be used - stack entry remains (truncated) and a new inline is added. + inl = istack->first_inline; + istack->delim_count -= useDelims; + inl->content.literal.len = istack->delim_count; + + emph = useDelims == 1 ? make_emph(inl->next) : make_strong(inl->next); + inl->next = emph; + *last = emph; + } + + // if the closer was not fully used, move back a char or two and try again. + if (useDelims < numdelims) + { + subj->pos = subj->pos - numdelims + useDelims; + return handle_strong_emph(subj, c, last); + } + + return make_str(chunk_literal("")); } -done: - free(last); - return result; +cannotClose: + inl_text = make_str(chunk_dup(&subj->input, subj->pos - numdelims, numdelims)); + + if (can_open) + { + istack = (inline_stack*)malloc(sizeof(inline_stack)); + istack->delim_count = numdelims; + istack->delim_char = c; + istack->first_inline = inl_text; + istack->previous = subj->last_emphasis; + subj->last_emphasis = istack; + } + + return inl_text; } // Parse backslash-escape or just a backslash, returning an inline. @@ -828,19 +795,10 @@ static int parse_inline(subject* subj, node_inl ** last) new = handle_pointy_brace(subj); break; case '_': - if (subj->pos > 0) { - unsigned char prev = peek_at(subj, subj->pos - 1); - if (isalnum(prev) || prev == '_') { - new = make_str(chunk_literal("_")); - advance(subj); - break; - } - } - - new = handle_strong_emph(subj, '_'); + new = handle_strong_emph(subj, '_', last); break; case '*': - new = handle_strong_emph(subj, '*'); + new = handle_strong_emph(subj, '*', last); break; case '[': new = handle_left_bracket(subj); -- cgit v1.2.3 From bc78ad0a182bd322552fd081e30e552c18a87455 Mon Sep 17 00:00:00 2001 From: Knagis <> Date: Thu, 9 Oct 2014 07:29:25 -0400 Subject: Modified inline parsing to keep track of two pointers - the head of the list and the tail. --- src/inlines.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 589b3c3..56e4eba 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -11,7 +11,7 @@ #include "inlines.h" typedef struct InlineStack { - inline_stack *previous; + struct InlineStack *previous; node_inl *first_inline; int delim_count; char delim_char; @@ -27,7 +27,7 @@ typedef struct Subject { static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); static node_inl *parse_inlines_while(subject* subj, int (*f)(subject*)); -static int parse_inline(subject* subj, node_inl ** last); +static int parse_inline(subject* subj, node_inl ** first, node_inl ** last); static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap); static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap); @@ -720,8 +720,9 @@ inline static int not_eof(subject* subj) extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) { node_inl* result = NULL; - node_inl** last = &result; - while ((*f)(subj) && parse_inline(subj, last)) { + node_inl** first = &result; + node_inl* last = NULL; + while ((*f)(subj) && parse_inline(subj, first, &last)) { } return result; } @@ -768,7 +769,7 @@ static int subject_find_special_char(subject *subj) // Parse an inline, advancing subject, and add it to last element. // Adjust tail to point to new last element of list. // Return 0 if no inline can be parsed, 1 otherwise. -static int parse_inline(subject* subj, node_inl ** last) +static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) { node_inl* new = NULL; chunk contents; @@ -828,11 +829,18 @@ static int parse_inline(subject* subj, node_inl ** last) new = make_str(contents); } - if (*last == NULL) { + if (*first == NULL) { + *first = new; *last = new; } else { - append_inlines(*last, new); + append_inlines(*first, new); } + + while (new->next) { + new = new->next; + } + *last = new; + return 1; } -- cgit v1.2.3 From 7d7011b918e2783c75d52237887f09bcb1adb62d Mon Sep 17 00:00:00 2001 From: Knagis Date: Thu, 9 Oct 2014 14:34:36 +0300 Subject: Revert "Modified inline parsing to keep track of two pointers - the head of the list and the tail." This reverts commit bc78ad0a182bd322552fd081e30e552c18a87455. --- src/inlines.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 56e4eba..589b3c3 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -11,7 +11,7 @@ #include "inlines.h" typedef struct InlineStack { - struct InlineStack *previous; + inline_stack *previous; node_inl *first_inline; int delim_count; char delim_char; @@ -27,7 +27,7 @@ typedef struct Subject { static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); static node_inl *parse_inlines_while(subject* subj, int (*f)(subject*)); -static int parse_inline(subject* subj, node_inl ** first, node_inl ** last); +static int parse_inline(subject* subj, node_inl ** last); static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap); static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap); @@ -720,9 +720,8 @@ inline static int not_eof(subject* subj) extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) { node_inl* result = NULL; - node_inl** first = &result; - node_inl* last = NULL; - while ((*f)(subj) && parse_inline(subj, first, &last)) { + node_inl** last = &result; + while ((*f)(subj) && parse_inline(subj, last)) { } return result; } @@ -769,7 +768,7 @@ static int subject_find_special_char(subject *subj) // Parse an inline, advancing subject, and add it to last element. // Adjust tail to point to new last element of list. // Return 0 if no inline can be parsed, 1 otherwise. -static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) +static int parse_inline(subject* subj, node_inl ** last) { node_inl* new = NULL; chunk contents; @@ -829,18 +828,11 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) new = make_str(contents); } - if (*first == NULL) { - *first = new; + if (*last == NULL) { *last = new; } else { - append_inlines(*first, new); + append_inlines(*last, new); } - - while (new->next) { - new = new->next; - } - *last = new; - return 1; } -- cgit v1.2.3 From de80806ef51ce89667ebc3f3d1f58bf55d2b370e Mon Sep 17 00:00:00 2001 From: user Date: Thu, 9 Oct 2014 07:36:37 -0400 Subject: Modified inline parsing to keep track of two pointers - the head of the list and the tail. --- src/inlines.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 589b3c3..56e4eba 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -11,7 +11,7 @@ #include "inlines.h" typedef struct InlineStack { - inline_stack *previous; + struct InlineStack *previous; node_inl *first_inline; int delim_count; char delim_char; @@ -27,7 +27,7 @@ typedef struct Subject { static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); static node_inl *parse_inlines_while(subject* subj, int (*f)(subject*)); -static int parse_inline(subject* subj, node_inl ** last); +static int parse_inline(subject* subj, node_inl ** first, node_inl ** last); static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap); static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap); @@ -720,8 +720,9 @@ inline static int not_eof(subject* subj) extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) { node_inl* result = NULL; - node_inl** last = &result; - while ((*f)(subj) && parse_inline(subj, last)) { + node_inl** first = &result; + node_inl* last = NULL; + while ((*f)(subj) && parse_inline(subj, first, &last)) { } return result; } @@ -768,7 +769,7 @@ static int subject_find_special_char(subject *subj) // Parse an inline, advancing subject, and add it to last element. // Adjust tail to point to new last element of list. // Return 0 if no inline can be parsed, 1 otherwise. -static int parse_inline(subject* subj, node_inl ** last) +static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) { node_inl* new = NULL; chunk contents; @@ -828,11 +829,18 @@ static int parse_inline(subject* subj, node_inl ** last) new = make_str(contents); } - if (*last == NULL) { + if (*first == NULL) { + *first = new; *last = new; } else { - append_inlines(*last, new); + append_inlines(*first, new); } + + while (new->next) { + new = new->next; + } + *last = new; + return 1; } -- cgit v1.2.3 From c667b141b84ff73f02202cf7debf37d60e9b3918 Mon Sep 17 00:00:00 2001 From: user Date: Thu, 9 Oct 2014 07:44:11 -0400 Subject: After inline parsing free any remaining InlineStack instances. --- src/inlines.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 56e4eba..e0c1441 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -724,6 +724,15 @@ extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) node_inl* last = NULL; while ((*f)(subj) && parse_inline(subj, first, &last)) { } + + inline_stack* istack = subj->last_emphasis; + inline_stack* temp; + while (istack != NULL) { + temp = istack->previous; + free(istack); + istack = temp; + } + return result; } -- cgit v1.2.3 From 93b1ac3408142fb08643de1d94a77384add2fd09 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sat, 18 Oct 2014 21:02:21 -0700 Subject: Reindented c sources. --- src/blocks.c | 199 +++++++++++++++++++++++++------------------------- src/buffer.c | 11 ++- src/inlines.c | 219 +++++++++++++++++++++++++++---------------------------- src/main.c | 5 +- src/print.c | 34 ++++----- src/references.c | 5 +- src/utf8.c | 39 +++++----- 7 files changed, 253 insertions(+), 259 deletions(-) (limited to 'src') diff --git a/src/blocks.c b/src/blocks.c index 5b38116..c0c7e23 100644 --- a/src/blocks.c +++ b/src/blocks.c @@ -47,13 +47,13 @@ bool is_blank(strbuf *s, int offset) { while (offset < s->size) { switch (s->ptr[offset]) { - case '\n': - return true; - case ' ': - offset++; - break; - default: - return false; + case '\n': + return true; + case ' ': + offset++; + break; + default: + return false; } } @@ -63,17 +63,17 @@ bool is_blank(strbuf *s, int offset) static inline bool can_contain(int parent_type, int child_type) { return ( parent_type == BLOCK_DOCUMENT || - parent_type == BLOCK_BQUOTE || - parent_type == BLOCK_LIST_ITEM || - (parent_type == BLOCK_LIST && child_type == BLOCK_LIST_ITEM) ); + parent_type == BLOCK_BQUOTE || + parent_type == BLOCK_LIST_ITEM || + (parent_type == BLOCK_LIST && child_type == BLOCK_LIST_ITEM) ); } static inline bool accepts_lines(int block_type) { return (block_type == BLOCK_PARAGRAPH || - block_type == BLOCK_ATX_HEADER || - block_type == BLOCK_INDENTED_CODE || - block_type == BLOCK_FENCED_CODE); + block_type == BLOCK_ATX_HEADER || + block_type == BLOCK_INDENTED_CODE || + block_type == BLOCK_FENCED_CODE); } static void add_line(node_block* node_block, chunk *ch, int offset) @@ -156,77 +156,77 @@ static void finalize(node_block* b, int line_number) } switch (b->tag) { - case BLOCK_PARAGRAPH: - pos = 0; - while (strbuf_at(&b->string_content, 0) == '[' && - (pos = parse_reference_inline(&b->string_content, b->top->as.document.refmap))) { - - strbuf_drop(&b->string_content, pos); - } - if (is_blank(&b->string_content, 0)) { - b->tag = BLOCK_REFERENCE_DEF; - } - break; + case BLOCK_PARAGRAPH: + pos = 0; + while (strbuf_at(&b->string_content, 0) == '[' && + (pos = parse_reference_inline(&b->string_content, b->top->as.document.refmap))) { - case BLOCK_INDENTED_CODE: - remove_trailing_blank_lines(&b->string_content); - strbuf_putc(&b->string_content, '\n'); - break; - - case BLOCK_FENCED_CODE: - // first line of contents becomes info - firstlinelen = strbuf_strchr(&b->string_content, '\n', 0); - - strbuf_init(&b->as.code.info, 0); - houdini_unescape_html_f( - &b->as.code.info, - b->string_content.ptr, - firstlinelen + strbuf_drop(&b->string_content, pos); + } + if (is_blank(&b->string_content, 0)) { + b->tag = BLOCK_REFERENCE_DEF; + } + break; + + case BLOCK_INDENTED_CODE: + remove_trailing_blank_lines(&b->string_content); + strbuf_putc(&b->string_content, '\n'); + break; + + case BLOCK_FENCED_CODE: + // first line of contents becomes info + firstlinelen = strbuf_strchr(&b->string_content, '\n', 0); + + strbuf_init(&b->as.code.info, 0); + houdini_unescape_html_f( + &b->as.code.info, + b->string_content.ptr, + firstlinelen ); - strbuf_drop(&b->string_content, firstlinelen + 1); + strbuf_drop(&b->string_content, firstlinelen + 1); - strbuf_trim(&b->as.code.info); - strbuf_unescape(&b->as.code.info); - break; + strbuf_trim(&b->as.code.info); + strbuf_unescape(&b->as.code.info); + break; - case BLOCK_LIST: // determine tight/loose status - b->as.list.tight = true; // tight by default - item = b->children; + case BLOCK_LIST: // determine tight/loose status + b->as.list.tight = true; // tight by default + item = b->children; - while (item) { - // check for non-final non-empty list item ending with blank line: - if (item->last_line_blank && item->next) { + while (item) { + // check for non-final non-empty list item ending with blank line: + if (item->last_line_blank && item->next) { + b->as.list.tight = false; + break; + } + // recurse into children of list item, to see if there are + // spaces between them: + subitem = item->children; + while (subitem) { + if (ends_with_blank_line(subitem) && + (item->next || subitem->next)) { b->as.list.tight = false; break; } - // recurse into children of list item, to see if there are - // spaces between them: - subitem = item->children; - while (subitem) { - if (ends_with_blank_line(subitem) && - (item->next || subitem->next)) { - b->as.list.tight = false; - break; - } - subitem = subitem->next; - } - if (!(b->as.list.tight)) { - break; - } - item = item->next; + subitem = subitem->next; } + if (!(b->as.list.tight)) { + break; + } + item = item->next; + } - break; + break; - default: - break; + default: + break; } } // Add a node_block as child of another. Return pointer to child. static node_block* add_child(node_block* parent, - int block_type, int start_line, int start_column) + int block_type, int start_line, int start_column) { assert(parent); @@ -276,14 +276,14 @@ void stmd_free_nodes(node_block *e) void process_inlines(node_block* cur, reference_map *refmap) { switch (cur->tag) { - case BLOCK_PARAGRAPH: - case BLOCK_ATX_HEADER: - case BLOCK_SETEXT_HEADER: - cur->inline_content = parse_inlines(&cur->string_content, refmap); - break; - - default: - break; + case BLOCK_PARAGRAPH: + case BLOCK_ATX_HEADER: + case BLOCK_SETEXT_HEADER: + cur->inline_content = parse_inlines(&cur->string_content, refmap); + break; + + default: + break; } node_block *child = cur->children; @@ -355,9 +355,9 @@ static int parse_list_marker(chunk *input, int pos, struct ListData ** dataptr) static int lists_match(struct ListData *list_data, struct ListData *item_data) { return (list_data->list_type == item_data->list_type && - list_data->delimiter == item_data->delimiter && - // list_data->marker_offset == item_data.marker_offset && - list_data->bullet_char == item_data->bullet_char); + list_data->delimiter == item_data->delimiter && + // list_data->marker_offset == item_data.marker_offset && + list_data->bullet_char == item_data->bullet_char); } static node_block *finalize_document(node_block *document, int linenum) @@ -486,7 +486,7 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) } else if (container->tag == BLOCK_LIST_ITEM) { if (indent >= container->as.list.marker_offset + - container->as.list.padding) { + container->as.list.padding) { offset += container->as.list.marker_offset + container->as.list.padding; } else if (blank) { @@ -506,7 +506,7 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) } } else if (container->tag == BLOCK_ATX_HEADER || - container->tag == BLOCK_SETEXT_HEADER) { + container->tag == BLOCK_SETEXT_HEADER) { // a header can never contain more than one line all_matched = false; @@ -550,7 +550,7 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) // unless last matched container is code node_block, try new container starts: while (container->tag != BLOCK_FENCED_CODE && container->tag != BLOCK_INDENTED_CODE && - container->tag != BLOCK_HTML) { + container->tag != BLOCK_HTML) { first_nonspace = offset; while (peek_at(&input, first_nonspace) == ' ') @@ -603,17 +603,17 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) // note, we don't adjust offset because the tag is part of the text } else if (container->tag == BLOCK_PARAGRAPH && - (lev = scan_setext_header_line(&input, first_nonspace)) && - // check that there is only one line in the paragraph: - strbuf_strrchr(&container->string_content, '\n', - strbuf_len(&container->string_content) - 2) < 0) { + (lev = scan_setext_header_line(&input, first_nonspace)) && + // check that there is only one line in the paragraph: + strbuf_strrchr(&container->string_content, '\n', + strbuf_len(&container->string_content) - 2) < 0) { container->tag = BLOCK_SETEXT_HEADER; container->as.header.level = lev; offset = input.len - 1; } else if (!(container->tag == BLOCK_PARAGRAPH && !all_matched) && - (matched = scan_hrule(&input, first_nonspace))) { + (matched = scan_hrule(&input, first_nonspace))) { // it's only now that we know the line is not part of a setext header: container = add_child(container, BLOCK_HRULE, line_number, first_nonspace + 1); @@ -646,16 +646,16 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) data->marker_offset = indent; if (container->tag != BLOCK_LIST || - !lists_match(&container->as.list, data)) { + !lists_match(&container->as.list, data)) { container = add_child(container, BLOCK_LIST, line_number, - first_nonspace + 1); + first_nonspace + 1); memcpy(&container->as.list, data, sizeof(*data)); } // add the list item container = add_child(container, BLOCK_LIST_ITEM, line_number, - first_nonspace + 1); + first_nonspace + 1); /* TODO: static */ memcpy(&container->as.list, data, sizeof(*data)); free(data); @@ -684,11 +684,11 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) // lists or breaking out of lists. we also don't set last_line_blank // on an empty list item. container->last_line_blank = (blank && - container->tag != BLOCK_BQUOTE && - container->tag != BLOCK_FENCED_CODE && - !(container->tag == BLOCK_LIST_ITEM && - container->children == NULL && - container->start_line == line_number)); + container->tag != BLOCK_BQUOTE && + container->tag != BLOCK_FENCED_CODE && + !(container->tag == BLOCK_LIST_ITEM && + container->children == NULL && + container->start_line == line_number)); node_block *cont = container; while (cont->parent) { @@ -697,10 +697,10 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) } if (cur != last_matched_container && - container == last_matched_container && - !blank && - cur->tag == BLOCK_PARAGRAPH && - strbuf_len(&cur->string_content) > 0) { + container == last_matched_container && + !blank && + cur->tag == BLOCK_PARAGRAPH && + strbuf_len(&cur->string_content) > 0) { add_line(cur, &input, offset); @@ -721,7 +721,7 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) matched = 0; if (indent <= 3 && - peek_at(&input, first_nonspace) == container->as.code.fence_char) { + peek_at(&input, first_nonspace) == container->as.code.fence_char) { int fence_len = scan_close_code_fence(&input, first_nonspace); if (fence_len > container->as.code.fence_length) matched = 1; @@ -767,4 +767,3 @@ static void incorporate_line(strbuf *line, int line_number, node_block** curptr) *curptr = container; } } - diff --git a/src/buffer.c b/src/buffer.c index 7c2b86b..2e32720 100644 --- a/src/buffer.c +++ b/src/buffer.c @@ -15,8 +15,8 @@ unsigned char strbuf__initbuf[1]; unsigned char strbuf__oom[1]; -#define ENSURE_SIZE(b, d) \ - if ((d) > buf->asize && strbuf_grow(b, (d)) < 0)\ +#define ENSURE_SIZE(b, d) \ + if ((d) > buf->asize && strbuf_grow(b, (d)) < 0) \ return -1; void strbuf_init(strbuf *buf, int initial_size) @@ -111,8 +111,8 @@ int strbuf_set(strbuf *buf, const unsigned char *data, int len) int strbuf_sets(strbuf *buf, const char *string) { return strbuf_set(buf, - (const unsigned char *)string, - string ? strlen(string) : 0); + (const unsigned char *)string, + string ? strlen(string) : 0); } int strbuf_putc(strbuf *buf, int c) @@ -155,7 +155,7 @@ int strbuf_vprintf(strbuf *buf, const char *format, va_list ap) (char *)buf->ptr + buf->size, buf->asize - buf->size, format, args - ); + ); if (len < 0) { free(buf->ptr); @@ -351,4 +351,3 @@ extern void strbuf_unescape(strbuf *buf) strbuf_truncate(buf, w); } - diff --git a/src/inlines.c b/src/inlines.c index e0c1441..1eb5056 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -116,26 +116,26 @@ extern void free_inlines(node_inl* e) node_inl * next; while (e != NULL) { switch (e->tag){ - case INL_STRING: - case INL_RAW_HTML: - case INL_CODE: - chunk_free(&e->content.literal); - break; - case INL_LINEBREAK: - case INL_SOFTBREAK: - break; - case INL_LINK: - case INL_IMAGE: - free(e->content.linkable.url); - free(e->content.linkable.title); - free_inlines(e->content.linkable.label); - break; - case INL_EMPH: - case INL_STRONG: - free_inlines(e->content.inlines); - break; - default: - break; + case INL_STRING: + case INL_RAW_HTML: + case INL_CODE: + chunk_free(&e->content.literal); + break; + case INL_LINEBREAK: + case INL_SOFTBREAK: + break; + case INL_LINK: + case INL_IMAGE: + free(e->content.linkable.url); + free(e->content.linkable.title); + free_inlines(e->content.linkable.label); + break; + case INL_EMPH: + case INL_STRONG: + free_inlines(e->content.inlines); + break; + default: + break; } next = e->next; free(e); @@ -405,9 +405,9 @@ static node_inl* handle_entity(subject* subj) advance(subj); len = houdini_unescape_ent(&ent, - subj->input.data + subj->pos, - subj->input.len - subj->pos - ); + subj->input.data + subj->pos, + subj->input.len - subj->pos + ); if (len == 0) return make_str(chunk_literal("&")); @@ -480,8 +480,8 @@ unsigned char *clean_title(chunk *title) // remove surrounding quotes if any: if ((first == '\'' && last == '\'') || - (first == '(' && last == ')') || - (first == '"' && last == '"')) { + (first == '(' && last == ')') || + (first == '"' && last == '"')) { houdini_unescape_html_f(&buf, title->data + 1, title->len - 2); } else { houdini_unescape_html_f(&buf, title->data, title->len); @@ -509,7 +509,7 @@ static node_inl* handle_pointy_brace(subject* subj) return make_autolink( make_str_with_entities(&contents), contents, 0 - ); + ); } // next try to match an email autolink @@ -519,9 +519,9 @@ static node_inl* handle_pointy_brace(subject* subj) subj->pos += matchlen; return make_autolink( - make_str_with_entities(&contents), - contents, 1 - ); + make_str_with_entities(&contents), + contents, 1 + ); } // finally, try to match an html tag @@ -565,30 +565,30 @@ static int link_label(subject* subj, chunk *raw_label) char c; while ((c = peek_char(subj)) && (c != ']' || nestlevel > 0)) { switch (c) { - case '`': - tmp = handle_backticks(subj); - free_inlines(tmp); - break; - case '<': - tmp = handle_pointy_brace(subj); - free_inlines(tmp); - break; - case '[': // nested [] - nestlevel++; - advance(subj); - break; - case ']': // nested [] - nestlevel--; - advance(subj); - break; - case '\\': - advance(subj); - if (ispunct(peek_char(subj))) { - advance(subj); - } - break; - default: + case '`': + tmp = handle_backticks(subj); + free_inlines(tmp); + break; + case '<': + tmp = handle_pointy_brace(subj); + free_inlines(tmp); + break; + case '[': // nested [] + nestlevel++; + advance(subj); + break; + case ']': // nested [] + nestlevel--; + advance(subj); + break; + case '\\': + advance(subj); + if (ispunct(peek_char(subj))) { advance(subj); + } + break; + default: + advance(subj); } } if (c == ']') { @@ -624,8 +624,8 @@ static node_inl* handle_left_bracket(subject* subj) if (found_label) { if (peek_char(subj) == '(' && - ((sps = scan_spacechars(&subj->input, subj->pos + 1)) > -1) && - ((n = scan_link_url(&subj->input, subj->pos + 1 + sps)) > -1)) { + ((sps = scan_spacechars(&subj->input, subj->pos + 1)) > -1) && + ((n = scan_link_url(&subj->input, subj->pos + 1 + sps)) > -1)) { // try to parse an explicit link: starturl = subj->pos + 1 + sps; // after ( @@ -651,8 +651,8 @@ static node_inl* handle_left_bracket(subject* subj) subj->pos = endlabel; lab = parse_chunk_inlines(&rawlabel, subj->refmap); result = append_inlines(make_str(chunk_literal("[")), - append_inlines(lab, - make_str(chunk_literal("]")))); + append_inlines(lab, + make_str(chunk_literal("]")))); return result; } } else { @@ -681,7 +681,7 @@ static node_inl* handle_left_bracket(subject* subj) subj->pos = endlabel; lab = parse_chunk_inlines(&rawlabel, subj->refmap); result = append_inlines(make_str(chunk_literal("[")), - append_inlines(lab, make_str(chunk_literal("]")))); + append_inlines(lab, make_str(chunk_literal("]")))); } return result; } @@ -703,8 +703,8 @@ static node_inl* handle_newline(subject *subj) advance(subj); } if (nlpos > 1 && - peek_at(subj, nlpos - 1) == ' ' && - peek_at(subj, nlpos - 2) == ' ') { + peek_at(subj, nlpos - 1) == ' ' && + peek_at(subj, nlpos - 2) == ' ') { return make_linebreak(); } else { return make_softbreak(); @@ -789,67 +789,67 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) return 0; } switch(c){ - case '\n': - new = handle_newline(subj); - break; - case '`': - new = handle_backticks(subj); - break; - case '\\': - new = handle_backslash(subj); - break; - case '&': - new = handle_entity(subj); - break; - case '<': - new = handle_pointy_brace(subj); - break; - case '_': - new = handle_strong_emph(subj, '_', last); - break; - case '*': - new = handle_strong_emph(subj, '*', last); - break; - case '[': + case '\n': + new = handle_newline(subj); + break; + case '`': + new = handle_backticks(subj); + break; + case '\\': + new = handle_backslash(subj); + break; + case '&': + new = handle_entity(subj); + break; + case '<': + new = handle_pointy_brace(subj); + break; + case '_': + new = handle_strong_emph(subj, '_', last); + break; + case '*': + new = handle_strong_emph(subj, '*', last); + break; + case '[': + new = handle_left_bracket(subj); + break; + case '!': + advance(subj); + if (peek_char(subj) == '[') { new = handle_left_bracket(subj); - break; - case '!': - advance(subj); - if (peek_char(subj) == '[') { - new = handle_left_bracket(subj); - if (new != NULL && new->tag == INL_LINK) { - new->tag = INL_IMAGE; - } else { - new = append_inlines(make_str(chunk_literal("!")), new); - } + if (new != NULL && new->tag == INL_LINK) { + new->tag = INL_IMAGE; } else { - new = make_str(chunk_literal("!")); - } - break; - default: - endpos = subject_find_special_char(subj); - contents = chunk_dup(&subj->input, subj->pos, endpos - subj->pos); - subj->pos = endpos; - - // if we're at a newline, strip trailing spaces. - if (peek_char(subj) == '\n') { - chunk_rtrim(&contents); + new = append_inlines(make_str(chunk_literal("!")), new); } + } else { + new = make_str(chunk_literal("!")); + } + break; + default: + endpos = subject_find_special_char(subj); + contents = chunk_dup(&subj->input, subj->pos, endpos - subj->pos); + subj->pos = endpos; + + // if we're at a newline, strip trailing spaces. + if (peek_char(subj) == '\n') { + chunk_rtrim(&contents); + } - new = make_str(contents); + new = make_str(contents); } if (*first == NULL) { - *first = new; + *first = new; *last = new; } else { append_inlines(*first, new); } - + while (new->next) { new = new->next; } - *last = new; - + *last = new; + return 1; } @@ -865,8 +865,8 @@ void spnl(subject* subj) { bool seen_newline = false; while (peek_char(subj) == ' ' || - (!seen_newline && - (seen_newline = peek_char(subj) == '\n'))) { + (!seen_newline && + (seen_newline = peek_char(subj) == '\n'))) { advance(subj); } } @@ -933,4 +933,3 @@ int parse_reference_inline(strbuf *input, reference_map *refmap) reference_create(refmap, &lab, &url, &title); return subj.pos; } - diff --git a/src/main.c b/src/main.c index 76a0e12..99d14f8 100644 --- a/src/main.c +++ b/src/main.c @@ -38,7 +38,7 @@ int main(int argc, char *argv[]) printf(" - CommonMark converter (c) 2014 John MacFarlane\n"); exit(0); } else if ((strcmp(argv[i], "--help") == 0) || - (strcmp(argv[i], "-h") == 0)) { + (strcmp(argv[i], "-h") == 0)) { print_usage(); exit(0); } else if (strcmp(argv[i], "--ast") == 0) { @@ -61,7 +61,7 @@ int main(int argc, char *argv[]) if (fp == NULL) { fprintf(stderr, "Error opening file %s: %s\n", - argv[files[i]], strerror(errno)); + argv[files[i]], strerror(errno)); exit(1); } @@ -74,4 +74,3 @@ int main(int argc, char *argv[]) return 0; } - diff --git a/src/print.c b/src/print.c index 83f8daa..f3bd8e5 100644 --- a/src/print.c +++ b/src/print.c @@ -16,17 +16,17 @@ static void print_str(const unsigned char *s, int len) unsigned char c = s[i]; switch (c) { - case '\n': - printf("\\n"); - break; - case '"': - printf("\\\""); - break; - case '\\': - printf("\\\\"); - break; - default: - putchar((int)c); + case '\n': + printf("\\n"); + break; + case '"': + printf("\\\""); + break; + case '\\': + printf("\\\\"); + break; + default: + putchar((int)c); } } putchar('"'); @@ -116,13 +116,13 @@ static void print_blocks(node_block* b, int indent) data = &(b->as.list); if (data->list_type == ordered) { printf("list (type=ordered tight=%s start=%d delim=%s)\n", - (data->tight ? "true" : "false"), - data->start, - (data->delimiter == parens ? "parens" : "period")); + (data->tight ? "true" : "false"), + data->start, + (data->delimiter == parens ? "parens" : "period")); } else { printf("list (type=bullet tight=%s bullet_char=%c)\n", - (data->tight ? "true" : "false"), - data->bullet_char); + (data->tight ? "true" : "false"), + data->bullet_char); } print_blocks(b->children, indent + 2); break; @@ -148,7 +148,7 @@ static void print_blocks(node_block* b, int indent) break; case BLOCK_FENCED_CODE: printf("fenced_code length=%d info=", - b->as.code.fence_length); + b->as.code.fence_length); print_str(b->as.code.info.ptr, -1); putchar(' '); print_str(b->string_content.ptr, -1); diff --git a/src/references.c b/src/references.c index 3e54b48..975bf81 100644 --- a/src/references.c +++ b/src/references.c @@ -55,7 +55,7 @@ static void add_reference(reference_map *map, reference* ref) while (t) { if (t->hash == ref->hash && - !strcmp((char *)t->label, (char *)ref->label)) { + !strcmp((char *)t->label, (char *)ref->label)) { reference_free(ref); return; } @@ -105,7 +105,7 @@ reference* reference_lookup(reference_map *map, chunk *label) while (ref) { if (ref->hash == hash && - !strcmp((char *)ref->label, (char *)norm)) + !strcmp((char *)ref->label, (char *)norm)) break; ref = ref->next; } @@ -138,4 +138,3 @@ reference_map *reference_map_new(void) memset(map, 0x0, sizeof(reference_map)); return map; } - diff --git a/src/utf8.c b/src/utf8.c index 6b34831..8a786b7 100644 --- a/src/utf8.c +++ b/src/utf8.c @@ -103,24 +103,24 @@ int utf8proc_iterate(const uint8_t *str, int str_len, int32_t *dst) return -1; switch (length) { - case 1: - uc = str[0]; - break; - case 2: - uc = ((str[0] & 0x1F) << 6) + (str[1] & 0x3F); - if (uc < 0x80) uc = -1; - break; - case 3: - uc = ((str[0] & 0x0F) << 12) + ((str[1] & 0x3F) << 6) - + (str[2] & 0x3F); - if (uc < 0x800 || (uc >= 0xD800 && uc < 0xE000) || - (uc >= 0xFDD0 && uc < 0xFDF0)) uc = -1; - break; - case 4: - uc = ((str[0] & 0x07) << 18) + ((str[1] & 0x3F) << 12) - + ((str[2] & 0x3F) << 6) + (str[3] & 0x3F); - if (uc < 0x10000 || uc >= 0x110000) uc = -1; - break; + case 1: + uc = str[0]; + break; + case 2: + uc = ((str[0] & 0x1F) << 6) + (str[1] & 0x3F); + if (uc < 0x80) uc = -1; + break; + case 3: + uc = ((str[0] & 0x0F) << 12) + ((str[1] & 0x3F) << 6) + + (str[2] & 0x3F); + if (uc < 0x800 || (uc >= 0xD800 && uc < 0xE000) || + (uc >= 0xFDD0 && uc < 0xFDF0)) uc = -1; + break; + case 4: + uc = ((str[0] & 0x07) << 18) + ((str[1] & 0x3F) << 12) + + ((str[2] & 0x3F) << 6) + (str[3] & 0x3F); + if (uc < 0x10000 || uc >= 0x110000) uc = -1; + break; } if (uc < 0 || ((uc & 0xFFFF) >= 0xFFFE)) @@ -173,7 +173,7 @@ void utf8proc_case_fold(strbuf *dest, const uint8_t *str, int len) { int32_t c; -#define bufpush(x) \ +#define bufpush(x) \ utf8proc_encode_char(x, dest) while (len > 0) { @@ -190,4 +190,3 @@ void utf8proc_case_fold(strbuf *dest, const uint8_t *str, int len) len -= char_len; } } - -- cgit v1.2.3 From a50384fac90f89165fd3120b2e5fec39ca4b8ff7 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sat, 18 Oct 2014 21:04:42 -0700 Subject: Don't emit empty str elements in handle_strong_emph. --- src/inlines.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 1eb5056..9fa4a7f 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -360,7 +360,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) return handle_strong_emph(subj, c, last); } - return make_str(chunk_literal("")); + return NULL; // make_str(chunk_literal("")); } cannotClose: @@ -845,8 +845,10 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) append_inlines(*first, new); } - while (new->next) { - new = new->next; + if (new) { + while (new->next) { + new = new->next; + } } *last = new; -- cgit v1.2.3 From db7434f4b164738a3a3fde15b0c610053c9f3a5f Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sat, 18 Oct 2014 22:10:23 -0700 Subject: Fixed performance regression. See discussion under #157. --- src/inlines.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 9fa4a7f..b530c02 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -841,16 +841,10 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) if (*first == NULL) { *first = new; *last = new; - } else { - append_inlines(*first, new); - } - - if (new) { - while (new->next) { - new = new->next; - } + } else if (new) { + append_inlines(*last, new); + *last = new; } - *last = new; return 1; } -- cgit v1.2.3 From 32abf27635068757a084f9a959d21413ab212793 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sat, 18 Oct 2014 23:11:34 -0700 Subject: parse_inline: Correctly move to last inline. --- src/inlines.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index b530c02..10ef834 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -844,6 +844,10 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) } else if (new) { append_inlines(*last, new); *last = new; + while (new->next) { + new = new->next; + *last = new; + } } return 1; -- cgit v1.2.3 From 50cb546d1c603d7444ec09ff52463c2c01212cb2 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sun, 19 Oct 2014 13:07:38 -0700 Subject: Whitespace changes. --- src/inlines.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index 10ef834..f2a1c63 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -304,7 +304,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) node_inl * inl; node_inl * emph; node_inl * inl_text; - + numdelims = scan_delims(subj, c, &can_open, &can_close); if (can_close) @@ -724,7 +724,7 @@ extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) node_inl* last = NULL; while ((*f)(subj) && parse_inline(subj, first, &last)) { } - + inline_stack* istack = subj->last_emphasis; inline_stack* temp; while (istack != NULL) { @@ -732,7 +732,7 @@ extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) free(istack); istack = temp; } - + return result; } -- cgit v1.2.3 From acfdce9fa8159ec950ec91bd68e8f56b869c0167 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Sun, 19 Oct 2014 13:19:11 -0700 Subject: Removed now-undeeded 'first' parameter in parse_inline. --- src/inlines.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index f2a1c63..a6d947c 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -27,7 +27,7 @@ typedef struct Subject { static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); static node_inl *parse_inlines_while(subject* subj, int (*f)(subject*)); -static int parse_inline(subject* subj, node_inl ** first, node_inl ** last); +static int parse_inline(subject* subj, node_inl ** last); static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap); static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap); @@ -720,9 +720,12 @@ inline static int not_eof(subject* subj) extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) { node_inl* result = NULL; - node_inl** first = &result; - node_inl* last = NULL; - while ((*f)(subj) && parse_inline(subj, first, &last)) { + node_inl** last = &result; + node_inl* first = NULL; + while ((*f)(subj) && parse_inline(subj, last)) { + if (!first) { + first = *last; + } } inline_stack* istack = subj->last_emphasis; @@ -733,7 +736,7 @@ extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) istack = temp; } - return result; + return first; } node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap) @@ -778,7 +781,7 @@ static int subject_find_special_char(subject *subj) // Parse an inline, advancing subject, and add it to last element. // Adjust tail to point to new last element of list. // Return 0 if no inline can be parsed, 1 otherwise. -static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) +static int parse_inline(subject* subj, node_inl ** last) { node_inl* new = NULL; chunk contents; @@ -838,16 +841,11 @@ static int parse_inline(subject* subj, node_inl ** first, node_inl ** last) new = make_str(contents); } - if (*first == NULL) { - *first = new; + if (*last == NULL) { *last = new; } else if (new) { append_inlines(*last, new); *last = new; - while (new->next) { - new = new->next; - *last = new; - } } return 1; -- cgit v1.2.3 From 751fb7894ccca3a89c4f14cb5c99ff39be957455 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Fri, 24 Oct 2014 08:00:05 -0700 Subject: Renamed subj->last_emphasis to subj->emphasis_openers. --- src/inlines.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index a6d947c..a736ec6 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -22,7 +22,7 @@ typedef struct Subject { int pos; int label_nestlevel; reference_map *refmap; - inline_stack *last_emphasis; + inline_stack *emphasis_openers; } subject; static node_inl *parse_chunk_inlines(chunk *chunk, reference_map *refmap); @@ -166,7 +166,7 @@ static void subject_from_buf(subject *e, strbuf *buffer, reference_map *refmap) e->pos = 0; e->label_nestlevel = 0; e->refmap = refmap; - e->last_emphasis = NULL; + e->emphasis_openers = NULL; chunk_rtrim(&e->input); } @@ -179,7 +179,7 @@ static void subject_from_chunk(subject *e, chunk *chunk, reference_map *refmap) e->pos = 0; e->label_nestlevel = 0; e->refmap = refmap; - e->last_emphasis = NULL; + e->emphasis_openers = NULL; chunk_rtrim(&e->input); } @@ -310,7 +310,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) if (can_close) { // walk the stack and find a matching opener, if there is one - istack = subj->last_emphasis; + istack = subj->emphasis_openers; while (true) { if (istack == NULL) @@ -336,7 +336,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) inl->content.inlines = inl->next; inl->next = NULL; - subj->last_emphasis = istack->previous; + subj->emphasis_openers = istack->previous; istack->previous = NULL; *last = inl; free(istack); @@ -372,8 +372,8 @@ cannotClose: istack->delim_count = numdelims; istack->delim_char = c; istack->first_inline = inl_text; - istack->previous = subj->last_emphasis; - subj->last_emphasis = istack; + istack->previous = subj->emphasis_openers; + subj->emphasis_openers = istack; } return inl_text; @@ -728,7 +728,7 @@ extern node_inl* parse_inlines_while(subject* subj, int (*f)(subject*)) } } - inline_stack* istack = subj->last_emphasis; + inline_stack* istack = subj->emphasis_openers; inline_stack* temp; while (istack != NULL) { temp = istack->previous; -- cgit v1.2.3 From 29fbcd6e5715944b458965535bdd5bc302cc0996 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Fri, 24 Oct 2014 10:09:30 -0700 Subject: Fixed memory leak by freeing all unused emphasis openers. --- src/inlines.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index a736ec6..d24235a 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -301,6 +301,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) int numdelims; int useDelims; inline_stack * istack; + inline_stack * tempstack; node_inl * inl; node_inl * emph; node_inl * inl_text; @@ -336,10 +337,13 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) inl->content.inlines = inl->next; inl->next = NULL; - subj->emphasis_openers = istack->previous; - istack->previous = NULL; + // remove this opener and all later ones from stack: + while (subj->emphasis_openers != istack->previous) { + tempstack = subj->emphasis_openers; + free(tempstack); + subj->emphasis_openers = subj->emphasis_openers->previous; + } *last = inl; - free(istack); } else { @@ -350,6 +354,15 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) emph = useDelims == 1 ? make_emph(inl->next) : make_strong(inl->next); inl->next = emph; + + // remove all later openers from stack: + while (subj->emphasis_openers != istack) { + tempstack = subj->emphasis_openers; + free(tempstack); + subj->emphasis_openers = subj->emphasis_openers->previous; + } + + *last = emph; } -- cgit v1.2.3 From d6643c7a5b8e5d8836a95c09a06253e43e158726 Mon Sep 17 00:00:00 2001 From: John MacFarlane Date: Fri, 24 Oct 2014 10:15:50 -0700 Subject: Fixed a memory allocation error. --- src/inlines.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) (limited to 'src') diff --git a/src/inlines.c b/src/inlines.c index d24235a..07a75f9 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -293,6 +293,16 @@ static int scan_delims(subject* subj, char c, bool * can_open, bool * can_close) return numdelims; } +static void free_openers(subject* subj, inline_stack* istack) +{ + inline_stack * tempstack; + while (subj->emphasis_openers != istack) { + tempstack = subj->emphasis_openers; + subj->emphasis_openers = subj->emphasis_openers->previous; + free(tempstack); + } +} + // Parse strong/emph or a fallback. // Assumes the subject has '_' or '*' at the current position. static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) @@ -301,7 +311,6 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) int numdelims; int useDelims; inline_stack * istack; - inline_stack * tempstack; node_inl * inl; node_inl * emph; node_inl * inl_text; @@ -338,11 +347,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) inl->next = NULL; // remove this opener and all later ones from stack: - while (subj->emphasis_openers != istack->previous) { - tempstack = subj->emphasis_openers; - free(tempstack); - subj->emphasis_openers = subj->emphasis_openers->previous; - } + free_openers(subj, istack->previous); *last = inl; } else @@ -356,12 +361,7 @@ static node_inl* handle_strong_emph(subject* subj, char c, node_inl **last) inl->next = emph; // remove all later openers from stack: - while (subj->emphasis_openers != istack) { - tempstack = subj->emphasis_openers; - free(tempstack); - subj->emphasis_openers = subj->emphasis_openers->previous; - } - + free_openers(subj, istack); *last = emph; } -- cgit v1.2.3