diff options
Diffstat (limited to 'src/latex.c')
| -rw-r--r-- | src/latex.c | 780 |
1 files changed, 379 insertions, 401 deletions
diff --git a/src/latex.c b/src/latex.c index 782b0c0..146062e 100644 --- a/src/latex.c +++ b/src/latex.c @@ -18,413 +18,391 @@ #define CR() renderer->cr(renderer) #define BLANKLINE() renderer->blankline(renderer) -static inline void outc(cmark_renderer *renderer, - cmark_escaping escape, - int32_t c, - unsigned char nextc) -{ - if (escape == LITERAL) { - cmark_render_code_point(renderer, c); - return; - } - - switch(c) { - case 123: // '{' - case 125: // '}' - case 35: // '#' - case 37: // '%' - case 38: // '&' - cmark_render_ascii(renderer, "\\"); - cmark_render_code_point(renderer, c); - break; - case 36: // '$' - case 95: // '_' - if (escape == NORMAL) { - cmark_render_ascii(renderer, "\\"); - } - cmark_render_code_point(renderer, c); - break; - case 45 : // '-' - if (nextc == 45) { // prevent ligature - cmark_render_ascii(renderer, "\\-"); - } else { - cmark_render_ascii(renderer, "-"); - } - break; - case 126: // '~' - if (escape == NORMAL) { - cmark_render_ascii(renderer, "\\textasciitilde{}"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 94: // '^' - cmark_render_ascii(renderer, "\\^{}"); - break; - case 92: // '\\' - if (escape == URL) { - // / acts as path sep even on windows: - cmark_render_ascii(renderer, "/"); - } else { - cmark_render_ascii(renderer, "\\textbackslash{}"); - } - break; - case 124: // '|' - cmark_render_ascii(renderer, "\\textbar{}"); - break; - case 60: // '<' - cmark_render_ascii(renderer, "\\textless{}"); - break; - case 62: // '>' - cmark_render_ascii(renderer, "\\textgreater{}"); - break; - case 91: // '[' - case 93: // ']' - cmark_render_ascii(renderer, "{"); - cmark_render_code_point(renderer, c); - cmark_render_ascii(renderer, "}"); - break; - case 34: // '"' - cmark_render_ascii(renderer, "\\textquotedbl{}"); - // requires \usepackage[T1]{fontenc} - break; - case 39: // '\'' - cmark_render_ascii(renderer, "\\textquotesingle{}"); - // requires \usepackage{textcomp} - break; - case 160: // nbsp - cmark_render_ascii(renderer, "~"); - break; - case 8230: // hellip - cmark_render_ascii(renderer, "\\ldots{}"); - break; - case 8216: // lsquo - if (escape == NORMAL) { - cmark_render_ascii(renderer, "`"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 8217: // rsquo - if (escape == NORMAL) { - cmark_render_ascii(renderer, "\'"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 8220: // ldquo - if (escape == NORMAL) { - cmark_render_ascii(renderer, "``"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 8221: // rdquo - if (escape == NORMAL) { - cmark_render_ascii(renderer, "''"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 8212: // emdash - if (escape == NORMAL) { - cmark_render_ascii(renderer, "---"); - } else { - cmark_render_code_point(renderer, c); - } - break; - case 8211: // endash - if (escape == NORMAL) { - cmark_render_ascii(renderer, "--"); - } else { - cmark_render_code_point(renderer, c); - } - break; - default: - cmark_render_code_point(renderer, c); - } +static inline void outc(cmark_renderer *renderer, cmark_escaping escape, + int32_t c, unsigned char nextc) { + if (escape == LITERAL) { + cmark_render_code_point(renderer, c); + return; + } + + switch (c) { + case 123: // '{' + case 125: // '}' + case 35: // '#' + case 37: // '%' + case 38: // '&' + cmark_render_ascii(renderer, "\\"); + cmark_render_code_point(renderer, c); + break; + case 36: // '$' + case 95: // '_' + if (escape == NORMAL) { + cmark_render_ascii(renderer, "\\"); + } + cmark_render_code_point(renderer, c); + break; + case 45: // '-' + if (nextc == 45) { // prevent ligature + cmark_render_ascii(renderer, "\\-"); + } else { + cmark_render_ascii(renderer, "-"); + } + break; + case 126: // '~' + if (escape == NORMAL) { + cmark_render_ascii(renderer, "\\textasciitilde{}"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 94: // '^' + cmark_render_ascii(renderer, "\\^{}"); + break; + case 92: // '\\' + if (escape == URL) { + // / acts as path sep even on windows: + cmark_render_ascii(renderer, "/"); + } else { + cmark_render_ascii(renderer, "\\textbackslash{}"); + } + break; + case 124: // '|' + cmark_render_ascii(renderer, "\\textbar{}"); + break; + case 60: // '<' + cmark_render_ascii(renderer, "\\textless{}"); + break; + case 62: // '>' + cmark_render_ascii(renderer, "\\textgreater{}"); + break; + case 91: // '[' + case 93: // ']' + cmark_render_ascii(renderer, "{"); + cmark_render_code_point(renderer, c); + cmark_render_ascii(renderer, "}"); + break; + case 34: // '"' + cmark_render_ascii(renderer, "\\textquotedbl{}"); + // requires \usepackage[T1]{fontenc} + break; + case 39: // '\'' + cmark_render_ascii(renderer, "\\textquotesingle{}"); + // requires \usepackage{textcomp} + break; + case 160: // nbsp + cmark_render_ascii(renderer, "~"); + break; + case 8230: // hellip + cmark_render_ascii(renderer, "\\ldots{}"); + break; + case 8216: // lsquo + if (escape == NORMAL) { + cmark_render_ascii(renderer, "`"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 8217: // rsquo + if (escape == NORMAL) { + cmark_render_ascii(renderer, "\'"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 8220: // ldquo + if (escape == NORMAL) { + cmark_render_ascii(renderer, "``"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 8221: // rdquo + if (escape == NORMAL) { + cmark_render_ascii(renderer, "''"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 8212: // emdash + if (escape == NORMAL) { + cmark_render_ascii(renderer, "---"); + } else { + cmark_render_code_point(renderer, c); + } + break; + case 8211: // endash + if (escape == NORMAL) { + cmark_render_ascii(renderer, "--"); + } else { + cmark_render_code_point(renderer, c); + } + break; + default: + cmark_render_code_point(renderer, c); + } } -typedef enum { - NO_LINK, - URL_AUTOLINK, - EMAIL_AUTOLINK, - NORMAL_LINK -} link_type; - -static link_type -get_link_type(cmark_node *node) -{ - size_t title_len, url_len; - cmark_node *link_text; - char *realurl; - int realurllen; - bool isemail = false; - - if (node->type != CMARK_NODE_LINK) { - return NO_LINK; - } - - const char* url = cmark_node_get_url(node); - cmark_chunk url_chunk = cmark_chunk_literal(url); - - url_len = safe_strlen(url); - if (url_len == 0 || scan_scheme(&url_chunk, 0) == 0) { - return NO_LINK; - } - - const char* title = cmark_node_get_title(node); - title_len = safe_strlen(title); - // if it has a title, we can't treat it as an autolink: - if (title_len > 0) { - return NORMAL_LINK; - } - - link_text = node->first_child; - cmark_consolidate_text_nodes(link_text); - realurl = (char*)url; - realurllen = url_len; - if (strncmp(realurl, "mailto:", 7) == 0) { - realurl += 7; - realurllen -= 7; - isemail = true; - } - if (realurllen == link_text->as.literal.len && - strncmp(realurl, - (char*)link_text->as.literal.data, - link_text->as.literal.len) == 0) { - if (isemail) { - return EMAIL_AUTOLINK; - } else { - return URL_AUTOLINK; - } - } else { - return NORMAL_LINK; - } +typedef enum { NO_LINK, URL_AUTOLINK, EMAIL_AUTOLINK, NORMAL_LINK } link_type; + +static link_type get_link_type(cmark_node *node) { + size_t title_len, url_len; + cmark_node *link_text; + char *realurl; + int realurllen; + bool isemail = false; + + if (node->type != CMARK_NODE_LINK) { + return NO_LINK; + } + + const char *url = cmark_node_get_url(node); + cmark_chunk url_chunk = cmark_chunk_literal(url); + + url_len = safe_strlen(url); + if (url_len == 0 || scan_scheme(&url_chunk, 0) == 0) { + return NO_LINK; + } + + const char *title = cmark_node_get_title(node); + title_len = safe_strlen(title); + // if it has a title, we can't treat it as an autolink: + if (title_len > 0) { + return NORMAL_LINK; + } + + link_text = node->first_child; + cmark_consolidate_text_nodes(link_text); + realurl = (char *)url; + realurllen = url_len; + if (strncmp(realurl, "mailto:", 7) == 0) { + realurl += 7; + realurllen -= 7; + isemail = true; + } + if (realurllen == link_text->as.literal.len && + strncmp(realurl, (char *)link_text->as.literal.data, + link_text->as.literal.len) == 0) { + if (isemail) { + return EMAIL_AUTOLINK; + } else { + return URL_AUTOLINK; + } + } else { + return NORMAL_LINK; + } } -static int -S_get_enumlevel(cmark_node *node) -{ - int enumlevel = 0; - cmark_node *tmp = node; - while (tmp) { - if (tmp->type == CMARK_NODE_LIST && - cmark_node_get_list_type(node) == CMARK_ORDERED_LIST) { - enumlevel++; - } - tmp = tmp->parent; - } - return enumlevel; +static int S_get_enumlevel(cmark_node *node) { + int enumlevel = 0; + cmark_node *tmp = node; + while (tmp) { + if (tmp->type == CMARK_NODE_LIST && + cmark_node_get_list_type(node) == CMARK_ORDERED_LIST) { + enumlevel++; + } + tmp = tmp->parent; + } + return enumlevel; } -static int -S_render_node(cmark_renderer *renderer, - cmark_node *node, - cmark_event_type ev_type, - int options) -{ - int list_number; - char list_number_string[20]; - bool entering = (ev_type == CMARK_EVENT_ENTER); - cmark_list_type list_type; - const char* roman_numerals[] = { "", "i", "ii", "iii", "iv", "v", - "vi", "vii", "viii", "ix", "x" - }; - - // avoid warning about unused parameter: - (void)(options); - - switch (node->type) { - case CMARK_NODE_DOCUMENT: - break; - - case CMARK_NODE_BLOCK_QUOTE: - if (entering) { - LIT("\\begin{quote}"); - CR(); - } else { - LIT("\\end{quote}"); - BLANKLINE(); - } - break; - - case CMARK_NODE_LIST: - list_type = cmark_node_get_list_type(node); - if (entering) { - LIT("\\begin{"); - LIT(list_type == CMARK_ORDERED_LIST ? - "enumerate" : "itemize"); - LIT("}"); - CR(); - list_number = cmark_node_get_list_start(node); - if (list_number > 1) { - sprintf(list_number_string, - "%d", list_number); - LIT("\\setcounter{enum"); - LIT((char *)roman_numerals[S_get_enumlevel(node)]); - LIT("}{"); - OUT(list_number_string, false, NORMAL); - LIT("}"); - CR(); - } - } else { - LIT("\\end{"); - LIT(list_type == CMARK_ORDERED_LIST ? - "enumerate" : "itemize"); - LIT("}"); - BLANKLINE(); - } - break; - - case CMARK_NODE_ITEM: - if (entering) { - LIT("\\item "); - } else { - CR(); - } - break; - - case CMARK_NODE_HEADER: - if (entering) { - switch (cmark_node_get_header_level(node)) { - case 1: - LIT("\\section"); - break; - case 2: - LIT("\\subsection"); - break; - case 3: - LIT("\\subsubsection"); - break; - case 4: - LIT("\\paragraph"); - break; - case 5: - LIT("\\subparagraph"); - break; - } - LIT("{"); - } else { - LIT("}"); - BLANKLINE(); - } - break; - - case CMARK_NODE_CODE_BLOCK: - CR(); - LIT("\\begin{verbatim}"); - CR(); - OUT(cmark_node_get_literal(node), false, LITERAL); - CR(); - LIT("\\end{verbatim}"); - BLANKLINE(); - break; - - case CMARK_NODE_HTML: - break; - - case CMARK_NODE_HRULE: - BLANKLINE(); - LIT("\\begin{center}\\rule{0.5\\linewidth}{\\linethickness}\\end{center}"); - BLANKLINE(); - break; - - case CMARK_NODE_PARAGRAPH: - if (!entering) { - BLANKLINE(); - } - break; - - case CMARK_NODE_TEXT: - OUT(cmark_node_get_literal(node), true, NORMAL); - break; - - case CMARK_NODE_LINEBREAK: - LIT("\\\\"); - CR(); - break; - - case CMARK_NODE_SOFTBREAK: - if (renderer->width == 0) { - CR(); - } else { - OUT(" ", true, NORMAL); - } - break; - - case CMARK_NODE_CODE: - LIT("\\texttt{"); - OUT(cmark_node_get_literal(node), false, NORMAL); - LIT("}"); - break; - - case CMARK_NODE_INLINE_HTML: - break; - - case CMARK_NODE_STRONG: - if (entering) { - LIT("\\textbf{"); - } else { - LIT("}"); - } - break; - - case CMARK_NODE_EMPH: - if (entering) { - LIT("\\emph{"); - } else { - LIT("}"); - } - break; - - case CMARK_NODE_LINK: - if (entering) { - const char* url = cmark_node_get_url(node); - // requires \usepackage{hyperref} - switch(get_link_type(node)) { - case URL_AUTOLINK: - LIT("\\url{"); - OUT(url, false, URL); - break; - case EMAIL_AUTOLINK: - LIT("\\href{"); - OUT(url, false, URL); - LIT("}\\nolinkurl{"); - break; - case NORMAL_LINK: - LIT("\\href{"); - OUT(url, false, URL); - LIT("}{"); - break; - case NO_LINK: - LIT("{"); // error? - } - } else { - LIT("}"); - } - - break; - - case CMARK_NODE_IMAGE: - if (entering) { - LIT("\\protect\\includegraphics{"); - // requires \include{graphicx} - OUT(cmark_node_get_url(node), false, URL); - LIT("}"); - return 0; - } - break; - - default: - assert(false); - break; - } - - return 1; +static int S_render_node(cmark_renderer *renderer, cmark_node *node, + cmark_event_type ev_type, int options) { + int list_number; + char list_number_string[20]; + bool entering = (ev_type == CMARK_EVENT_ENTER); + cmark_list_type list_type; + const char *roman_numerals[] = {"", "i", "ii", "iii", "iv", "v", + "vi", "vii", "viii", "ix", "x"}; + + // avoid warning about unused parameter: + (void)(options); + + switch (node->type) { + case CMARK_NODE_DOCUMENT: + break; + + case CMARK_NODE_BLOCK_QUOTE: + if (entering) { + LIT("\\begin{quote}"); + CR(); + } else { + LIT("\\end{quote}"); + BLANKLINE(); + } + break; + + case CMARK_NODE_LIST: + list_type = cmark_node_get_list_type(node); + if (entering) { + LIT("\\begin{"); + LIT(list_type == CMARK_ORDERED_LIST ? "enumerate" : "itemize"); + LIT("}"); + CR(); + list_number = cmark_node_get_list_start(node); + if (list_number > 1) { + sprintf(list_number_string, "%d", list_number); + LIT("\\setcounter{enum"); + LIT((char *)roman_numerals[S_get_enumlevel(node)]); + LIT("}{"); + OUT(list_number_string, false, NORMAL); + LIT("}"); + CR(); + } + } else { + LIT("\\end{"); + LIT(list_type == CMARK_ORDERED_LIST ? "enumerate" : "itemize"); + LIT("}"); + BLANKLINE(); + } + break; + + case CMARK_NODE_ITEM: + if (entering) { + LIT("\\item "); + } else { + CR(); + } + break; + + case CMARK_NODE_HEADER: + if (entering) { + switch (cmark_node_get_header_level(node)) { + case 1: + LIT("\\section"); + break; + case 2: + LIT("\\subsection"); + break; + case 3: + LIT("\\subsubsection"); + break; + case 4: + LIT("\\paragraph"); + break; + case 5: + LIT("\\subparagraph"); + break; + } + LIT("{"); + } else { + LIT("}"); + BLANKLINE(); + } + break; + + case CMARK_NODE_CODE_BLOCK: + CR(); + LIT("\\begin{verbatim}"); + CR(); + OUT(cmark_node_get_literal(node), false, LITERAL); + CR(); + LIT("\\end{verbatim}"); + BLANKLINE(); + break; + + case CMARK_NODE_HTML: + break; + + case CMARK_NODE_HRULE: + BLANKLINE(); + LIT("\\begin{center}\\rule{0.5\\linewidth}{\\linethickness}\\end{center}"); + BLANKLINE(); + break; + + case CMARK_NODE_PARAGRAPH: + if (!entering) { + BLANKLINE(); + } + break; + + case CMARK_NODE_TEXT: + OUT(cmark_node_get_literal(node), true, NORMAL); + break; + + case CMARK_NODE_LINEBREAK: + LIT("\\\\"); + CR(); + break; + + case CMARK_NODE_SOFTBREAK: + if (renderer->width == 0) { + CR(); + } else { + OUT(" ", true, NORMAL); + } + break; + + case CMARK_NODE_CODE: + LIT("\\texttt{"); + OUT(cmark_node_get_literal(node), false, NORMAL); + LIT("}"); + break; + + case CMARK_NODE_INLINE_HTML: + break; + + case CMARK_NODE_STRONG: + if (entering) { + LIT("\\textbf{"); + } else { + LIT("}"); + } + break; + + case CMARK_NODE_EMPH: + if (entering) { + LIT("\\emph{"); + } else { + LIT("}"); + } + break; + + case CMARK_NODE_LINK: + if (entering) { + const char *url = cmark_node_get_url(node); + // requires \usepackage{hyperref} + switch (get_link_type(node)) { + case URL_AUTOLINK: + LIT("\\url{"); + OUT(url, false, URL); + break; + case EMAIL_AUTOLINK: + LIT("\\href{"); + OUT(url, false, URL); + LIT("}\\nolinkurl{"); + break; + case NORMAL_LINK: + LIT("\\href{"); + OUT(url, false, URL); + LIT("}{"); + break; + case NO_LINK: + LIT("{"); // error? + } + } else { + LIT("}"); + } + + break; + + case CMARK_NODE_IMAGE: + if (entering) { + LIT("\\protect\\includegraphics{"); + // requires \include{graphicx} + OUT(cmark_node_get_url(node), false, URL); + LIT("}"); + return 0; + } + break; + + default: + assert(false); + break; + } + + return 1; } -char *cmark_render_latex(cmark_node *root, int options, int width) -{ - return cmark_render(root, options, width, outc, S_render_node); +char *cmark_render_latex(cmark_node *root, int options, int width) { + return cmark_render(root, options, width, outc, S_render_node); } |