--- src/stkutil.c | 219 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/stkutil.h | 2 + 2 files changed, 221 insertions(+), 0 deletions(-)
diff --git a/src/stkutil.c b/src/stkutil.c index 6f072e7..5da356c 100644 --- a/src/stkutil.c +++ b/src/stkutil.c @@ -5819,3 +5819,222 @@ const unsigned char *stk_pdu_from_envelope(const struct stk_envelope *envelope, return pdu; } + +static const char *html_colors[] = { + "#000000", /* Black */ + "#808080", /* Dark Grey */ + "#C11B17", /* Dark Red */ + "#FBB117", /* Dark Yellow */ + "#347235", /* Dark Green */ + "#307D7E", /* Dark Cyan */ + "#0000A0", /* Dark Blue */ + "#C031C7", /* Dark Magenta */ + "#C0C0C0", /* Grey */ + "#FFFFFF", /* White */ + "#FF0000", /* Bright Red */ + "#FFFF00", /* Bright Yellow */ + "#00FF00", /* Bright Green */ + "#00FFFF", /* Bright Cyan */ + "#0000FF", /* Bright Blue */ + "#FF00FF", /* Bright Magenta */ +}; + +#define STK_TEXT_FORMAT_ALIGN_MASK 0x03 +#define STK_TEXT_FORMAT_FONT_MASK 0x0C +#define STK_TEXT_FORMAT_STYLE_MASK 0xF0 +#define STK_DEFAULT_TEXT_ALIGNMENT 0x00 +#define STK_TEXT_FORMAT_INIT -1 + +/* Defined in ETSI 123 40 9.2.3.24.10.1.1 */ +enum stk_text_format_code { + STK_TEXT_FORMAT_LEFT_ALIGN = 0x00, + STK_TEXT_FORMAT_CENTER_ALIGN = 0x01, + STK_TEXT_FORMAT_RIGHT_ALIGN = 0x02, + STK_TEXT_FORMAT_NO_ALIGN = 0x03, + STK_TEXT_FORMAT_FONT_SIZE_LARGE = 0x04, + STK_TEXT_FORMAT_FONT_SIZE_SMALL = 0x08, + STK_TEXT_FORMAT_FONT_SIZE_RESERVED = 0x0c, + STK_TEXT_FORMAT_STYLE_BOLD = 0x10, + STK_TEXT_FORMAT_STYLE_ITALIC = 0x20, + STK_TEXT_FORMAT_STYLE_UNDERLINED = 0x40, + STK_TEXT_FORMAT_STYLE_STRIKETHROUGH = 0x80, +}; + + +static void end_format(GString *string, guint8 code, guint8 color) +{ + if ((code & ~STK_TEXT_FORMAT_ALIGN_MASK) || color) + g_string_append(string, "</span>"); + + if ((code & STK_TEXT_FORMAT_ALIGN_MASK) != STK_TEXT_FORMAT_NO_ALIGN) + g_string_append(string, "</div>"); +} + +static void start_format(GString *string, guint8 code, guint8 color) +{ + guint8 align = code & STK_TEXT_FORMAT_ALIGN_MASK; + guint8 font = code & STK_TEXT_FORMAT_FONT_MASK; + guint8 style = code & STK_TEXT_FORMAT_STYLE_MASK; + int fg = color & 0x0f; + int bg = (color >> 4) & 0x0f; + + /* align formatting applies to a block of test */ + if (align != STK_TEXT_FORMAT_NO_ALIGN) + g_string_append(string, "<div style=\""); + + switch (align) { + case STK_TEXT_FORMAT_RIGHT_ALIGN: + g_string_append(string, "text-align: right;\">"); + break; + case STK_TEXT_FORMAT_CENTER_ALIGN: + g_string_append(string, "text-align: center;\">"); + break; + case STK_TEXT_FORMAT_LEFT_ALIGN: + g_string_append(string, "text-align: left;\">"); + break; + } + + if (((code & ~STK_TEXT_FORMAT_ALIGN_MASK) == 0) && (color == 0)) + return; + + /* font, style, and color are inline */ + g_string_append(string, "<span style=\""); + + switch (font) { + case STK_TEXT_FORMAT_FONT_SIZE_LARGE: + g_string_append(string, "font-size: big;"); + break; + case STK_TEXT_FORMAT_FONT_SIZE_SMALL: + g_string_append(string, "font-size: small;"); + break; + } + + switch (style) { + case STK_TEXT_FORMAT_STYLE_BOLD: + g_string_append(string, "font-weight: bold;"); + break; + case STK_TEXT_FORMAT_STYLE_ITALIC: + g_string_append(string, "font-style: italic;"); + break; + case STK_TEXT_FORMAT_STYLE_UNDERLINED: + g_string_append(string, "text-decoration: underline;"); + break; + case STK_TEXT_FORMAT_STYLE_STRIKETHROUGH: + g_string_append(string, "text-decoration: line-through;"); + break; + } + + /* add any color */ + if (fg) + g_string_append_printf(string, "color: %s;", html_colors[fg]); + if (bg) + g_string_append_printf(string, "background-color: %s;", + html_colors[bg]); + g_string_append(string, "\">"); +} + +char *stk_text_to_html(const char *text, int text_len, + const unsigned char *attrs, int attrs_len) +{ + GString *string = g_string_sized_new(text_len + 1); + int *formats; + int pos, i, j, attr, prev_attr; + guint8 start, end, code, color, len, align; + + formats = g_try_malloc0(sizeof(int) * (text_len + 1)); + if (formats == NULL) + return NULL; + + /* we will need formatting at the position beyond the last char */ + for (i = 0; i <= text_len; i++) + formats[i] = STK_TEXT_FORMAT_INIT; + + for (i = 0; i+3 < attrs_len; i += 4) { + start = attrs[i]; + len = attrs[i + 1]; + code = attrs[i + 2]; + + if (i + 3 < attrs_len) + color = attrs[i + 3]; + else + color = 0; + + if (len == 0) + end = text_len; + else + end = start + len; + + /* sanity check values */ + if (start > end || end > text_len) + continue; + + /* + * if the alignment is the same as either the default + * or the last alignment used, don't set any alignment + * value. + */ + if (start == 0) + align = STK_DEFAULT_TEXT_ALIGNMENT; + else { + align = (formats[start - 1] & 0xFF) & + STK_TEXT_FORMAT_ALIGN_MASK; + if (align == STK_TEXT_FORMAT_NO_ALIGN) + align = STK_DEFAULT_TEXT_ALIGNMENT; + } + + if ((code & STK_TEXT_FORMAT_ALIGN_MASK) == align) + code |= STK_TEXT_FORMAT_NO_ALIGN; + + attr = code | (color << 8); + + for (j = start; j < end; j++) + formats[j] = attr; + } + + prev_attr = STK_TEXT_FORMAT_INIT; + + for (pos = 0; pos <= text_len; pos++) { + attr = formats[pos]; + if (attr != prev_attr) { + if (prev_attr != STK_TEXT_FORMAT_INIT) + end_format(string, prev_attr & 0xFF, + (attr >> 8) & 0xFF); + + if (attr != STK_TEXT_FORMAT_INIT) + start_format(string, attr & 0xFF, + (attr >> 8) & 0xFF); + + prev_attr = attr; + } + + if (pos == text_len) + break; + + switch (text[pos]) { + case '\n': + g_string_append(string, "<br/>"); + break; + case '\r': + g_string_append(string, "<br/>"); + if ((pos + 1 < text_len) && (text[pos + 1] == '\n')) + pos++; + break; + case '<': + g_string_append(string, "<"); + break; + case '>': + g_string_append(string, ">"); + break; + case '&': + g_string_append(string, "&"); + break; + default: + g_string_append_c(string, text[pos]); + } + } + + g_free(formats); + + /* return characters from string. Caller must free char data */ + return g_string_free(string, FALSE); +} diff --git a/src/stkutil.h b/src/stkutil.h index ca4817e..2fbcd7d 100644 --- a/src/stkutil.h +++ b/src/stkutil.h @@ -1643,3 +1643,5 @@ const unsigned char *stk_pdu_from_response(const struct stk_response *response, unsigned int *out_length); const unsigned char *stk_pdu_from_envelope(const struct stk_envelope *envelope, unsigned int *out_length); +char *stk_text_to_html(const char *text, int text_len, + const unsigned char *attrs, int attrs_len); -- 1.6.6.1 _______________________________________________ ofono mailing list ofono@ofono.org http://lists.ofono.org/listinfo/ofono