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import version
# Note: we can't just import std/os or the compiler cries. (No idea why.)
from std/os import getEnv, putEnv, commandLineParams, getCurrentDir
import std/options
import std/posix
import server/forkserver
import config/chapath
import config/config
import js/javascript
import local/client
import local/term
import utils/strwidth
import utils/twtstr
import chagashi/charset
const ChaVersionStr = block:
var s = "Chawan browser v0.1 "
when defined(debug):
s &= "(debug)"
else:
s &= "(release)"
s &= '\n'
s
proc help(i: int) =
let s = ChaVersionStr & """
Usage: cha [options] [URL(s) or file(s)...]
Options:
-- Interpret all following arguments as URLs
-c, --css <stylesheet> Pass stylesheet (e.g. -c 'a{color: blue}')
-d, --dump Print page to stdout
-h, --help Print this usage message
-o, --opt <config> Pass config options (e.g. -o 'page.q="quit()"')
-r, --run <script/file> Run passed script or file
-v, --version Print version information
-C, --config <file> Override config path
-I, --input-charset <enc> Specify document charset
-M, --monochrome Set color-mode to 'monochrome'
-O, --display-charset <enc> Specify display charset
-T, --type <type> Specify content mime type
-V, --visual Visual startup mode
"""
if i == 0:
stdout.write(s)
else:
stderr.write(s)
quit(i)
proc version() =
stdout.write(ChaVersionStr)
quit(0)
type ParamParseContext = object
params: seq[string]
i: int
configPath: Option[string]
contentType: Option[string]
charset: Charset
dump: bool
visual: bool
opts: seq[string]
stylesheet: string
pages: seq[string]
proc getnext(ctx: var ParamParseContext): string =
inc ctx.i
if ctx.i < ctx.params.len:
return ctx.params[ctx.i]
help(1)
proc parseConfig(ctx: var ParamParseContext) =
ctx.configPath = some(ctx.getnext())
proc parseMonochrome(ctx: var ParamParseContext) =
ctx.opts.add("display.color-mode = monochrome")
proc parseVisual(ctx: var ParamParseContext) =
ctx.visual = true
proc parseContentType(ctx: var ParamParseContext) =
ctx.contentType = some(ctx.getnext())
proc getCharset(ctx: var ParamParseContext): Charset =
let s = ctx.getnext()
let charset = getCharset(s)
if charset == CHARSET_UNKNOWN:
stderr.write("Unknown charset " & s & "\n")
quit(1)
return charset
proc parseInputCharset(ctx: var ParamParseContext) =
ctx.charset = ctx.getCharset()
proc parseOutputCharset(ctx: var ParamParseContext) =
ctx.opts.add("encoding.display-charset = '" & $ctx.getCharset() & "'")
proc parseDump(ctx: var ParamParseContext) =
ctx.dump = true
proc parseCSS(ctx: var ParamParseContext) =
ctx.stylesheet &= ctx.getnext()
proc parseOpt(ctx: var ParamParseContext) =
ctx.opts.add(ctx.getnext())
proc parseRun(ctx: var ParamParseContext) =
let script = dqEscape(ctx.getnext())
ctx.opts.add("start.startup-script = \"\"\"" & script & "\"\"\"")
ctx.opts.add("start.headless = true")
ctx.dump = true
proc parse(ctx: var ParamParseContext) =
var escapeAll = false
while ctx.i < ctx.params.len:
let param = ctx.params[ctx.i]
if escapeAll: # after --
ctx.pages.add(param)
inc ctx.i
continue
if param.len == 0:
inc ctx.i
continue
if param[0] == '-':
if param.len == 1:
# If param == "-", i.e. it is a single dash, then ignore it.
# (Some programs use single-dash to read from stdin, but we do that
# automatically when stdin is not a tty. So ignoring it entirely
# is probably for the best.)
inc ctx.i
continue
if param[1] != '-':
for j in 1 ..< param.len:
const NeedsNextParam = {'C', 'I', 'O', 'T', 'c', 'o', 'r'}
if j != param.high and param[j] in NeedsNextParam:
# expecting next parameter, but not the last char...
help(1)
case param[j]
of 'C': ctx.parseConfig()
of 'I': ctx.parseInputCharset()
of 'M': ctx.parseMonochrome()
of 'O': ctx.parseOutputCharset()
of 'T': ctx.parseContentType()
of 'V': ctx.parseVisual()
of 'c': ctx.parseCSS()
of 'd': ctx.parseDump()
of 'h': help(0)
of 'o': ctx.parseOpt()
of 'r': ctx.parseRun()
of 'v': version()
else: help(1)
else:
case param
of "--config": ctx.parseConfig()
of "--input-charset": ctx.parseInputCharset()
of "--monochrome": ctx.parseMonochrome()
of "--output-charset": ctx.parseOutputCharset()
of "--type": ctx.parseContentType()
of "--visual": ctx.parseVisual()
of "--css": ctx.parseCSS()
of "--dump": ctx.parseDump()
of "--help": help(0)
of "--opt": ctx.parseOpt()
of "--run": ctx.parseRun()
of "--version": version()
of "--": escapeAll = true
else: help(1)
else:
ctx.pages.add(param)
inc ctx.i
proc main() =
putEnv("CHA_LIBEXEC_DIR", ChaPath"${%CHA_LIBEXEC_DIR}".unquoteGet())
let forkserver = newForkServer()
var ctx = ParamParseContext(params: commandLineParams(), i: 0)
ctx.parse()
let jsrt = newJSRuntime()
let jsctx = jsrt.newJSContext()
var warnings = newSeq[string]()
let (config, res) = readConfig(ctx.configPath, jsctx)
if not res.success:
stderr.writeLine(res.errorMsg)
quit(1)
warnings.add(res.warnings)
for opt in ctx.opts:
let res = config.parseConfig(getCurrentDir(), opt, laxnames = true)
if not res.success:
stderr.write(res.errorMsg)
quit(1)
warnings.add(res.warnings)
config.css.stylesheet &= ctx.stylesheet
block commands:
let res = config.initCommands()
if res.isNone:
stderr.write("Error parsing commands: " & res.error)
quit(1)
isCJKAmbiguous = config.display.double_width_ambiguous
if ctx.pages.len == 0 and stdin.isatty():
if ctx.visual:
ctx.pages.add(config.start.visual_home)
elif (let httpHome = getEnv("HTTP_HOME"); httpHome != ""):
ctx.pages.add(httpHome)
elif (let wwwHome = getEnv("WWW_HOME"); wwwHome != ""):
ctx.pages.add(wwwHome)
if ctx.pages.len == 0 and not config.start.headless:
if stdin.isatty():
help(1)
# make sure tmpdir & sockdir both exist; if we do this later, then
# forkserver may try to open an empty dir
discard mkdir(cstring(config.external.tmpdir), 0o700)
discard mkdir(cstring(config.external.sockdir), 0o700)
forkserver.loadForkServerConfig(config)
let client = newClient(config, forkserver, jsctx, warnings)
try:
client.launchClient(ctx.pages, ctx.contentType, ctx.charset, ctx.dump)
except CatchableError:
client.flushConsole()
raise
main()
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