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Context code '+' to create context smartly

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Arun Prakash Jana 2020-05-03 16:16:14 +05:30
parent 3f60a1931f
commit ebb6f153b5
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GPG key ID: A75979F35C080412
3 changed files with 32 additions and 16 deletions
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24
plugins/README.md
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@ -161,17 +161,25 @@ Plugins can be written in any scripting language. However, POSIX-compliant shell
Drop the plugin in `${XDG_CONFIG_HOME:-$HOME/.config}/nnn/plugins` and make it executable. Optionally add a hotkey in `$NNN_PLUG` for frequent usage.
#### Controlling `nnn`'s active directory
`nnn` provides a mechanism for plugins to control its active directory.
#### Send data to `nnn`
`nnn` provides a mechanism for plugins to send data to `nnn` to control its active directory or invoke the list mode.
The way to do so is by writing to the pipe pointed by the environment variable `NNN_PIPE`.
The plugin should write a single string in the format `<context number><char><path>` without a newline at the end. For example, `1c/etc`.
The context number indicates the context to change the active directory of (0 is used to indicate the current context).
The `<char>` indicates the operation type.
The plugin should write a single string in the format `<ctxcode><opcode><data>` without a newline at the end. For example, `1c/etc`.
: Char : Operation :
The `ctxcode` indicates the context to change the active directory of.
| Context code | Meaning |
|:---:| --- |
| c | cd |
| l | list files in list mode |
| `1`-`4` | context number |
| `0` | current context |
| `+` | next inactive context or current (if all active) |
The `opcode` indicates the operation type.
| Opcode | Operation |
|:---:| --- |
| `c` | change directory |
| `l` | list files in list mode |
For convenience, we provided a helper script named `.nnn-plugin-helper` and a function named `nnn_cd` to ease this process. `nnn_cd` receives the path to change to as the first argument, and the context as an optional second argument.
If a context is not provided, it is asked for explicitly. To skip this and choose the current context, set the `CUR_CTX` variable in `.nnn-plugin-helper` to `1`.

4
plugins/mimelist
View file

@ -1,6 +1,6 @@
#!/usr/bin/env sh
# Description: Run fd/find in subtree and list files by mime type in current context
# Description: Run fd/find in subtree and list files by mime type in smart context
# Requires: fd/find
#
# Shell: POSIX compliant
@ -17,5 +17,5 @@ fi
printf "mime: "
read -r mime
printf "%s" "0l" > "$NNN_PIPE"
printf "%s" "+l" > "$NNN_PIPE"
$fd | file -if- | grep "$mime" | awk -F: '{printf "%s\0", $1}' > "$NNN_PIPE"

20
src/nnn.c
View file

@ -4234,16 +4234,24 @@ static void rmlistpath()
static void readpipe(int fd, char **path, char **lastname, char **lastdir)
{
char *nextpath = NULL;
int r;
char ctx, *nextpath = NULL;
ssize_t len = read(fd, g_buf, 1);
if (len != 1)
return;
char ctx = g_buf[0] - '0';
if (ctx > CTX_MAX)
return;
if (g_buf[0] == '+') {
r = cfg.curctx;
do
r = (r + 1) & ~CTX_MAX;
while (g_ctx[r].c_cfg.ctxactive && (r != cfg.curctx));
ctx = r + 1;
} else {
ctx = g_buf[0] - '0';
if (ctx > CTX_MAX)
return;
}
len = read(fd, g_buf, 1);
if (len != 1)
@ -4269,7 +4277,7 @@ static void readpipe(int fd, char **path, char **lastname, char **lastdir)
xstrsncpy(*lastdir, *path, PATH_MAX);
xstrsncpy(*path, nextpath, PATH_MAX);
} else {
int r = ctx - 1;
r = ctx - 1;
g_ctx[r].c_cfg.ctxactive = 0;
savecurctx(&cfg, nextpath, dents[cur].name, r);