From 9fa6ac7113a7e6bf8949c09aec2e060518a91c53 Mon Sep 17 00:00:00 2001
From: Michael Drake <michael.drake@codethink.co.uk>
Date: Tue, 7 Apr 2020 21:14:11 +0100
Subject: nscolour: Add function to get nscolour stylesheet.

---
 utils/nscolour.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 utils/nscolour.h |  7 +++++
 2 files changed, 86 insertions(+)

diff --git a/utils/nscolour.c b/utils/nscolour.c
index 381da1167..e66fbf838 100644
--- a/utils/nscolour.c
+++ b/utils/nscolour.c
@@ -185,3 +185,82 @@ nserror nscolour_update(void)
 
 	return NSERROR_OK;
 }
+
+/* Exported interface, documented in utils/nscolour.h */
+nserror nscolour_get_stylesheet(const char **stylesheet_out)
+{
+	static char buffer[640];
+	int ret;
+
+	assert(stylesheet_out != NULL);
+
+	ret = snprintf(buffer, sizeof(buffer),
+			".ns-odd-bg {\n"
+			"\tbackground-color: #%06x;\n"
+			"}\n"
+			".ns-odd-bg-hover {\n"
+			"\tbackground-color: #%06x;\n"
+			"}\n"
+			".ns-odd-fg {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-odd-fg-subtle {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-odd-fg-faded {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-odd-fg-good {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-odd-fg-bad {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-even-bg {\n"
+			"\tbackground-color: #%06x;\n"
+			"}\n"
+			".ns-even-bg-hover {\n"
+			"\tbackground-color: #%06x;\n"
+			"}\n"
+			".ns-even-fg {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-even-fg-subtle {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-even-fg-faded {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-even-fg-good {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-even-fg-bad {\n"
+			"\tcolor: #%06x;\n"
+			"}\n"
+			".ns-border {\n"
+			"\tborder-color: #%06x;\n"
+			"}\n",
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_BG]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_BG_HOVER]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_FG]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_FG_SUBTLE]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_FG_FADED]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_FG_GOOD]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_ODD_FG_BAD]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_BG]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_BG_HOVER]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_FG]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_FG_SUBTLE]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_FG_FADED]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_FG_GOOD]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_FG_BAD]),
+			colour_rb_swap(nscolours[NSCOLOUR_WIN_EVEN_BORDER]));
+	assert(ret > 0 && (size_t)ret < sizeof(buffer));
+	if (ret < 0 || (size_t)ret >= sizeof(buffer)) {
+		/* Error or buffer too small */
+		return NSERROR_NOSPACE;
+	}
+
+	*stylesheet_out = buffer;
+	return NSERROR_OK;
+}
diff --git a/utils/nscolour.h b/utils/nscolour.h
index 6857009bd..910d7f7a5 100644
--- a/utils/nscolour.h
+++ b/utils/nscolour.h
@@ -68,4 +68,11 @@ extern colour nscolours[];
  */
 nserror nscolour_update(void);
 
+/**
+ * Get a pointer to a stylesheet for nscolours.
+ *
+ * \return NSERROR_OK on success, or appropriate error otherwise.
+ */
+nserror nscolour_get_stylesheet(const char **stylesheet_out);
+
 #endif
-- 
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