Integre fluxos do PDFium VCL Component em aplicações Delphi e C++Builder, ou fluxos do PDFium LCL Component em Lazarus/FPC, com componentes em código-fonte para visualização, renderização, formulários, impressão, relatórios de preflight e validação orientada a padrões.
Este artigo é para teams integrating command-line PDF validation into build, intake, archive, or customer-processing pipelines. Ele trata PreflightReportCli batch validation como engenharia documental de produção, não como uma chamada isolada de componente.
O risco prático é que batch validation is only useful if exit codes, timeouts, report paths, severity thresholds, and retry behavior are stable enough for automation. Por isso o fluxo precisa de contrato escrito, diagnósticos observáveis e arquivos de regressão representativos.
Decisões de arquitetura
Design the CLI as a contract for automation. profile selection, fail-on severity, report format, and output directory layout / exit-code mapping for pass, warning, failure, timeout, bad input, and internal error
- profile selection, fail-on severity, report format, and output directory layout
- exit-code mapping for pass, warning, failure, timeout, bad input, and internal error
- parallelism, maximum file size, quarantine path, and retry rules
- how structured reports are retained with tickets, builds, or customer jobs
Fluxo de implementação
Map validation findings to process outcomes. The order below keeps the workflow reviewable for Delphi and C++Builder teams.
- standardize command-line arguments before wiring the tool into schedulers
- run one file per isolated job so timeouts and failures do not poison the batch
- write human and machine reports to deterministic locations
- translate findings into pass, review, block, or quarantine states
- summarize the batch with counts by severity, profile, and outcome
Evidências de validação
Batch evidence that makes failures actionable. Keep these fields with the output or support record.
- command arguments, profile version, file count, elapsed time, and exit code
- per-file report path, status, issue count, highest severity, and failure reason
- timeout, retry, quarantine, and cleanup actions
- machine-readable summary attached to the automated job record
Exit codes should reflect business policy
A preflight CLI is a bridge between PDF analysis and automation. It should produce predictable reports for people, structured output for machines, and clear exit behavior for schedulers and CI systems.
Regression files worth keeping
Keep more than successful samples. A useful PreflightReportCli batch validation regression set contains normal files, boundary files, and intentional failure files so the behavior is stable across releases.
- one corrupt file should not prevent reports for all remaining files
- warnings may need to fail CI but only flag intake jobs for manual review
- parallel processing should not write reports with colliding names
- operators need a stable difference between validation failure and tool failure
- standardize command-line arguments before wiring the tool into schedulers
- run one file per isolated job so timeouts and failures do not poison the batch
Engineering review notes for PreflightReportCli batch validation
Use these review notes to make sure the feature has moved beyond a demo and can be defended during release, support, and customer escalation.
- Decision: profile selection, fail-on severity, report format, and output directory layout. Implementation pressure point: run one file per isolated job so timeouts and failures do not poison the batch. Acceptance evidence: timeout, retry, quarantine, and cleanup actions. Regression trigger: operators need a stable difference between validation failure and tool failure
- Decision: exit-code mapping for pass, warning, failure, timeout, bad input, and internal error. Implementation pressure point: write human and machine reports to deterministic locations. Acceptance evidence: machine-readable summary attached to the automated job record. Regression trigger: one corrupt file should not prevent reports for all remaining files
- Decision: parallelism, maximum file size, quarantine path, and retry rules. Implementation pressure point: translate findings into pass, review, block, or quarantine states. Acceptance evidence: command arguments, profile version, file count, elapsed time, and exit code. Regression trigger: warnings may need to fail CI but only flag intake jobs for manual review
- Decision: how structured reports are retained with tickets, builds, or customer jobs. Implementation pressure point: summarize the batch with counts by severity, profile, and outcome. Acceptance evidence: per-file report path, status, issue count, highest severity, and failure reason. Regression trigger: parallel processing should not write reports with colliding names
- Decision: profile selection, fail-on severity, report format, and output directory layout. Implementation pressure point: standardize command-line arguments before wiring the tool into schedulers. Acceptance evidence: timeout, retry, quarantine, and cleanup actions. Regression trigger: operators need a stable difference between validation failure and tool failure
- Decision: exit-code mapping for pass, warning, failure, timeout, bad input, and internal error. Implementation pressure point: run one file per isolated job so timeouts and failures do not poison the batch. Acceptance evidence: machine-readable summary attached to the automated job record. Regression trigger: one corrupt file should not prevent reports for all remaining files
Casos limite
- one corrupt file should not prevent reports for all remaining files
- warnings may need to fail CI but only flag intake jobs for manual review
- parallel processing should not write reports with colliding names
- operators need a stable difference between validation failure and tool failure
Delphi / C++Builder notes
PDFium Component should sit behind a small service boundary that receives files, streams, profiles, and credentials, then returns output paths, warnings, metrics, and validation status. Important terms include PreflightReportCli, batch validation, exit code, severity, report path, timeout.
Exemplo de código Delphi
O esboço Delphi abaixo mostra um limite de serviço prático para este tema. Mantenha checagens de política, logs e validação fora do trecho estreito que chama o produto para que o fluxo continue testável.
procedure RunPdfiumBatch(const Files: TArray<string>; const OutputDir: string);
var
FileName: string;
begin
for FileName in Files do
begin
PdfView.LoadFromFile(FileName);
WritePreflightJson(OutputDir, FileName, InspectDocument(PdfView));
PdfView.Close;
end;
WriteBatchSummary(OutputDir);
end;Checklist de produção
- Run the workflow on an empty file, a normal customer file, and a worst-case file
- Open the generated PDF with the target viewer, validator, printer, or downstream application
- Log product version, profile version, input hash, output path, elapsed time, and warning count
- Keep passwords, certificates, temporary files, and customer data under explicit retention rules
- Add regression documents when a customer file exposes a new edge case