CODEWITHSUNDEEP
phpregex
Chris R
Chris R

Reputation: 276

Regular Expression to get Image Name from File

I am trying to extract all Image Names and their Paths from a file that was uploaded. I am looking for the proper regex.

The string is massive but a section would look like:

..... [{\"name\":\"Aluminum_Black_mat\",\"id\":\"b3281b09-88be-4e9b-9fc2-514cbaae0a0e\",\"backFaceCulling\":true,\"wireframe\":false,\"ambient\":[0.0,0.0,0.0],\"diffuse\":[1.0,1.0,1.0],\"specular\":[0.0,0.0,0.0],\"emissive\":[0.0,0.0,0.0],\"specularPower\":2.56,\"alpha\":1.0,\"diffuseTexture\":{\"name\":\"BlackRailing.jpg\",\"level\":1.0,\"hasAlpha\":false,\"getAlphaFromRGB\":false,\"coordinatesMode\":0,\"isCube\":false,\"uOffset\":0.0,\"vOffset\":0.0,\"uScale\":1.0,\"vScale\":1.0,\"uAng\":0.0,\"vAng\":0.0,\"wAng\":0.0,\"wrapU\":1,\"wrapV\":1,\"coordinatesIndex\":0,\"isRenderTarget\":false,\"renderTargetSize\":0,\"mirrorPlane\":null,\"renderList\":null,\"animations\":[]},\"diffuseFresnelParameters\ .... ETC

In that string there is BlackRailing.jpg. That's what i need to get. If it had a path i would like to get that too. Bascially everything between those quotes and only if it is an image. I have been mucking around on http://www.regexr.com/ for a while and i can't get it to match perfectly. And when i run the following i always get everything before the first quote.

preg_match_all('/[ :]".*.(jpe?g|png|bmp)/i', $buffer, $matches);

I am really bad with regex, any Help with the right regular expression for php would be greatly appriciated.

Thanks!

Upvotes: 2

Views: 668

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 627536

As you treat a JSON file as a text file, you can use a preg_replace approach like this assuming that there are no spaces between : and the value:

preg_match('/(?<=:")[^"]*\.(?:jpe?g|png|bmp)/i', $buffer, $matches);

See regex demo

The (?<=:") look-behind just checks for :" but does not capture it.

Note if you have a single space in-between the : and ", you can use '/(?<=:[ ]")[^"]*\.(?:jpe?g|png|bmp)/i' regex, but if there may be more, you will need a capturing group approach.

Upvotes: 3

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