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output: Allow "--background foo" and "-b foo" for background colors

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This only accepted "--background=". Really what we need to do is do an
actual getopt, but that wants a null-terminated array and is tightly
coupled to set_color.

Fixes #8053.
This commit is contained in:
Fabian Homborg 2021-06-10 10:39:40 +02:00
parent 695027234b
commit 95103893e6
1 changed files with 17 additions and 5 deletions
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22
src/output.cpp
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@ -353,6 +353,7 @@ rgb_color_t best_color(const std::vector<rgb_color_t> &candidates, color_support
/// Return the internal color code representing the specified color.
/// TODO: This code should be refactored to enable sharing with builtin_set_color.
/// In particular, the argument parsing still isn't fully capable.
rgb_color_t parse_color(const env_var_t &var, bool is_background) {
bool is_bold = false;
bool is_underline = false;
@ -366,17 +367,28 @@ rgb_color_t parse_color(const env_var_t &var, bool is_background) {
// wcslen is not available as constexpr
size_t prefix_len = wcslen(prefix);
bool next_is_background = false;
wcstring color_name;
for (const wcstring &next : var.as_list()) {
color_name.clear();
if (is_background) {
// Look for something like "--background=red".
if (string_prefixes_string(prefix, next)) {
if (color_name.empty() && next_is_background) {
color_name = next;
next_is_background = false;
} else if (string_prefixes_string(prefix, next)) {
// Look for something like "--background=red".
color_name = wcstring(next, prefix_len);
}
// Reverse should be meaningful in either context
if (next == L"--reverse" || next == L"-r") {
} else if (next == L"--background" || next == L"-b") {
// Without argument attached the next token is the color
// - if it's another option it's an error.
next_is_background = true;
} else if (next == L"--reverse" || next == L"-r") {
// Reverse should be meaningful in either context
is_reverse = true;
} else if (string_prefixes_string(L"-b", next)) {
// Look for something like "-bred".
// Yes, that length is hardcoded.
color_name = wcstring(next, 2);
}
} else {
if (next == L"--bold" || next == L"-o")