Mercurial > urweb
changeset 363:9d81597e03e8
Reasonable indenting for pure XML
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Thu, 16 Oct 2008 12:50:59 -0400 |
parents | 24a31b35e08f |
children | 7c58dc323683 |
files | src/elisp/urweb-mode.el |
diffstat | 1 files changed, 54 insertions(+), 4 deletions(-) [+] |
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line diff
--- a/src/elisp/urweb-mode.el Tue Oct 14 17:18:59 2008 -0400 +++ b/src/elisp/urweb-mode.el Thu Oct 16 12:50:59 2008 -0400 @@ -160,7 +160,7 @@ ;; The font lock regular expressions. -(defun inXml () +(defun urweb-in-xml () (save-excursion (let ( (depth 0) @@ -171,10 +171,10 @@ (cond ((looking-at "{") (if (> depth 0) - (setq depth (- depth 1)) + (decf depth) (setq finished t))) ((looking-at "}") - (setq depth (+ depth 1))) + (incf depth)) ((save-excursion (backward-char 1) (or (looking-at "=>") (looking-at "->"))) nil) ((looking-at "<") @@ -203,7 +203,7 @@ ("\\(</\\sw+>\\)" (1 font-lock-tag-face)) ("\\([^<>{}]+\\)" - (1 (if (inXml) + (1 (if (urweb-in-xml) font-lock-string-face nil))) @@ -452,6 +452,43 @@ (1+ (current-column)) nil)))) +(defun urweb-new-tags () + "Decide if the previous line of XML introduced unclosed tags" + (save-excursion + (let ((start-pos (point)) + (depth 0) + (done nil)) + (previous-line 1) + (beginning-of-line) + (while (and (not done) (search-forward "<" start-pos t)) + (if (looking-at "/") + (if (search-forward ">" start-pos t) + (when (> depth 0) (decf depth)) + (setq done t)) + (if (search-forward ">" start-pos t) + (if (not (save-excursion (backward-char 2) (looking-at "/"))) + (incf depth)) + (setq done t)))) + (and (not done) (> depth 0))))) + +(defun urweb-tag-matching-indent () + "Seek back to a matching opener tag and get its line's indent" + (save-excursion + (let ((depth 0) + (done nil)) + (while (and (not done) (search-backward ">" nil t)) + (if (save-excursion (backward-char 1) (looking-at "/")) + (when (not (search-backward "<" nil t)) + (setq done t)) + (if (search-backward "<" nil t) + (if (looking-at "</") + (incf depth) + (if (= depth 0) + (setq done t) + (decf depth))) + (setq done t)))) + (current-indentation)))) + (defun urweb-calculate-indentation () (save-excursion (beginning-of-line) (skip-chars-forward "\t ") @@ -471,6 +508,19 @@ ;; Continued comment. (and (looking-at "\\*") (urweb-find-comment-indent)) + (and (urweb-in-xml) + (let ((prev-indent (save-excursion + (previous-line 1) + (re-search-backward "^[^\n]" nil t) + (current-indentation)))) + (cond + ((looking-at "</") + (urweb-tag-matching-indent)) + ((urweb-new-tags) + (+ prev-indent 2)) + (t + prev-indent)))) + ;; Continued string ? (Added 890113 lbn) (and (looking-at "\\\\") (save-excursion