[Bug fixes] Fix Windows UTF-8 path support for Paddle Inference model/json files

[Echo-Nie]

PR Category

Inference

PR Types

Bug fixes

Description

Issue Reproduction

import os
import paddle

model_tag = os.path.exists(r".\模型\PP-DocLayoutV2\inference.pdmodel")
params_tag = os.path.exists(r".\模型\PP-DocLayoutV2\inference.pdiparams")
print("="*20)
print(f"exists: {model_tag}, {params_tag}")
print("="*20)

config = paddle.inference.Config(r".\模型\PP-DocLayoutV2\inference.pdmodel", r".\模型\PP-DocLayoutV2\inference.pdiparams")

Solution

• Fix the issue on Windows where Paddle Inference Config cannot recognize .pdmodel and .json files with Chinese characters in the path.

• Modify paddle/fluid/inference/api/helper.h for IsFileExists and IsDirectory functions:

  • On Windows, use the WideChar API (_wfopen) to open UTF-8 encoded paths.
  • Keep the Linux/Unix logic unchanged.

• Add conditional compilation using _WIN32 to ensure cross-platform compatibility.

• Resolves the previous RuntimeError: Cannot open file caused by Windows ANSI encoding limitations.

Test Results

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