mirror of
https://github.com/Luzifer/promcertcheck.git
synced 2024-11-14 10:42:42 +00:00
122 lines
3 KiB
Go
122 lines
3 KiB
Go
package pongo2
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
)
|
|
|
|
var reIdentifiers = regexp.MustCompile("^[a-zA-Z0-9_]+$")
|
|
|
|
// Use this Context type to provide constants, variables, instances or functions to your template.
|
|
//
|
|
// pongo2 automatically provides meta-information or functions through the "pongo2"-key.
|
|
// Currently, context["pongo2"] contains the following keys:
|
|
// 1. version: returns the version string
|
|
//
|
|
// Template examples for accessing items from your context:
|
|
// {{ myconstant }}
|
|
// {{ myfunc("test", 42) }}
|
|
// {{ user.name }}
|
|
// {{ pongo2.version }}
|
|
type Context map[string]interface{}
|
|
|
|
func (c Context) checkForValidIdentifiers() *Error {
|
|
for k, v := range c {
|
|
if !reIdentifiers.MatchString(k) {
|
|
return &Error{
|
|
Sender: "checkForValidIdentifiers",
|
|
ErrorMsg: fmt.Sprintf("Context-key '%s' (value: '%+v') is not a valid identifier.", k, v),
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c Context) Update(other Context) Context {
|
|
for k, v := range other {
|
|
c[k] = v
|
|
}
|
|
return c
|
|
}
|
|
|
|
// If you're writing a custom tag, your tag's Execute()-function will
|
|
// have access to the ExecutionContext. This struct stores anything
|
|
// about the current rendering process's Context including
|
|
// the Context provided by the user (field Public).
|
|
// You can safely use the Private context to provide data to the user's
|
|
// template (like a 'forloop'-information). The Shared-context is used
|
|
// to share data between tags. All ExecutionContexts share this context.
|
|
//
|
|
// Please be careful when accessing the Public data.
|
|
// PLEASE DO NOT MODIFY THE PUBLIC CONTEXT (read-only).
|
|
//
|
|
// To create your own execution context within tags, use the
|
|
// NewChildExecutionContext(parent) function.
|
|
type ExecutionContext struct {
|
|
template *Template
|
|
|
|
Autoescape bool
|
|
Public Context
|
|
Private Context
|
|
Shared Context
|
|
}
|
|
|
|
var pongo2MetaContext = Context{
|
|
"version": Version,
|
|
}
|
|
|
|
func newExecutionContext(tpl *Template, ctx Context) *ExecutionContext {
|
|
privateCtx := make(Context)
|
|
|
|
// Make the pongo2-related funcs/vars available to the context
|
|
privateCtx["pongo2"] = pongo2MetaContext
|
|
|
|
return &ExecutionContext{
|
|
template: tpl,
|
|
|
|
Public: ctx,
|
|
Private: privateCtx,
|
|
Autoescape: true,
|
|
}
|
|
}
|
|
|
|
func NewChildExecutionContext(parent *ExecutionContext) *ExecutionContext {
|
|
newctx := &ExecutionContext{
|
|
template: parent.template,
|
|
|
|
Public: parent.Public,
|
|
Private: make(Context),
|
|
Autoescape: parent.Autoescape,
|
|
}
|
|
newctx.Shared = parent.Shared
|
|
|
|
// Copy all existing private items
|
|
newctx.Private.Update(parent.Private)
|
|
|
|
return newctx
|
|
}
|
|
|
|
func (ctx *ExecutionContext) Error(msg string, token *Token) *Error {
|
|
filename := ctx.template.name
|
|
var line, col int
|
|
if token != nil {
|
|
// No tokens available
|
|
// TODO: Add location (from where?)
|
|
filename = token.Filename
|
|
line = token.Line
|
|
col = token.Col
|
|
}
|
|
return &Error{
|
|
Template: ctx.template,
|
|
Filename: filename,
|
|
Line: line,
|
|
Column: col,
|
|
Token: token,
|
|
Sender: "execution",
|
|
ErrorMsg: msg,
|
|
}
|
|
}
|
|
|
|
func (ctx *ExecutionContext) Logf(format string, args ...interface{}) {
|
|
ctx.template.set.logf(format, args...)
|
|
}
|