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Sway: Configuration: Support for escaping line breaks.

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Escape line return in configuration file with the '\' character. Similar
to shell scripts.

Signed-off-by: Roosembert Palacios <roosembert.palacios@epfl.ch>
This commit is contained in:
Roosembert Palacios 2016-06-05 23:36:27 +02:00
parent 17dbcb40dc
commit e8c0ef98b1
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GPG key ID: CAAAECE5C2242BB7
2 changed files with 47 additions and 1 deletions
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42
sway/config.c
View file

@ -455,10 +455,11 @@ bool load_include_configs(const char *path, struct sway_config *config) {
bool read_config(FILE *file, struct sway_config *config) {
bool success = true;
bool multiline = false;
enum cmd_status block = CMD_BLOCK_END;
int line_number = 0;
char *line;
char *line, *mlinebuf = NULL;
while (!feof(file)) {
line = read_line(file);
line_number++;
@ -467,6 +468,45 @@ bool read_config(FILE *file, struct sway_config *config) {
free(line);
continue;
}
size_t length = strlen(line);
if (line[length-1] == '\\') {
// Start of multiline
if (feof(file)){
sway_log(L_ERROR, "Error on line %i '%s': Unexpected EOF on "\
"multiline command", line_number, line);
free(line);
continue;
}
line[length-1] = '\0';
multiline = true;
} else
multiline = false;
if (multiline || mlinebuf){
size_t mlinebuf_length;
if (mlinebuf)
mlinebuf_length = strlen(mlinebuf);
else
mlinebuf_length = 0;
char *tmp = malloc(mlinebuf_length+length+1); // + '\0'
tmp[0]='\0'; // if mlinebuf_length==0 strncpy won't do anything. Make a null string.
strncpy(tmp, mlinebuf, mlinebuf_length);
tmp[mlinebuf_length]='\0'; // strncpy won't add '\0' at the end...
strcat(tmp, line);
if (mlinebuf)
free(mlinebuf);
free(line);
mlinebuf = tmp;
if (multiline) // The following line is part of a multi line config.
continue;
else { // This is the last line of a multi line config.
line = mlinebuf;
sway_log(L_INFO, "Processing parsed multiline command '%s'", line);
mlinebuf = NULL;
}
}
struct cmd_results *res = config_command(line, block);
switch(res->status) {
case CMD_FAILURE:

6
sway/sway.5.txt
View file

@ -16,6 +16,12 @@ on startup. These commands usually consist of setting your preferences and
setting key bindings. An example config is likely present in /etc/sway/config
for you to check out.
Lines in the configuration file might be extended through multiple lines by
adding a '\' character at the end of line. e.g.:
bindsym Shift+XF86AudioRaiseVolume exec pactl set-sink-volume \
$(pactl list sinks | grep -B 1 RUNNING | sed '1q;d' | sed 's/[^0-9]\+//g') +5%
These commands can be executed in your config file, via **sway-msg**(1), or via
the bindsym command.