mirror of
https://github.com/michaelrsweet/pdfio.git
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93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
//
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// PDF to text program for PDFio.
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//
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// Copyright © 2022-2024 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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//
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// Usage:
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//
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// ./pdf2text FILENAME.pdf > FILENAME.txt
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//
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#include <pdfio.h>
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#include <string.h>
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//
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// 'main()' - Main entry.
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//
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int // O - Exit status
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main(int argc, // I - Number of command-line arguments
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char *argv[]) // I - Command-line arguments
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{
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pdfio_file_t *file; // PDF file
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size_t i, j, // Looping vars
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num_pages, // Number of pages
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num_streams; // Number of streams for page
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pdfio_obj_t *obj; // Current page object
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pdfio_stream_t *st; // Current page content stream
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char buffer[1024]; // String buffer
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bool first; // First string token?
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// Verify command-line arguments...
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if (argc != 2)
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{
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puts("Usage: pdf2text FILENAME.pdf > FILENAME.txt");
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return (1);
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}
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// Open the PDF file...
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if ((file = pdfioFileOpen(argv[1], /*password_cb*/NULL, /*password_data*/NULL, /*error_cb*/NULL, /*error_data*/NULL)) == NULL)
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return (1);
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// Try grabbing content from all of the pages...
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for (i = 0, num_pages = pdfioFileGetNumPages(file); i < num_pages; i ++)
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{
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if ((obj = pdfioFileGetPage(file, i)) == NULL)
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continue;
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num_streams = pdfioPageGetNumStreams(obj);
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for (j = 0; j < num_streams; j ++)
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{
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if ((st = pdfioPageOpenStream(obj, j, true)) == NULL)
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continue;
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// Read PDF tokens from the page stream...
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first = true;
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while (pdfioStreamGetToken(st, buffer, sizeof(buffer)))
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{
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if (buffer[0] == '(')
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{
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// Text string using an 8-bit encoding
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if (first)
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first = false;
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else if (buffer[1] != ' ')
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putchar(' ');
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fputs(buffer + 1, stdout);
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}
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else if (!strcmp(buffer, "Td") || !strcmp(buffer, "TD") || !strcmp(buffer, "T*") || !strcmp(buffer, "\'") || !strcmp(buffer, "\""))
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{
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// Text operators that advance to the next line in the block
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putchar('\n');
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first = true;
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}
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}
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if (!first)
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putchar('\n');
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pdfioStreamClose(st);
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}
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}
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pdfioFileClose(file);
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return (0);
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}
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